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Egretta caerulea feed mainly during the daylight hours. They are carnivorous, with their diet consisting of fish, frogs, lizards, snakes, turtles, and crustaceans such as fiddler crabs, crayfish and shrimp. They also eat aquatic insects and spiders. When swamps and marshes become dry, they live on grasshhoppers, crickets, beetles and other grassland insects.
The Little Blue Heron's long legs enable it to wade into the water, where it walks slowly along an area in order to locate prey, often retracing its steps or standing motionless. They sometimes rake the ground with their foot to disturb prey into movement and stretch their long necks to peer into the water. Their long beak is used to jab and eat the prey. Extensive studies found the heron's prey capture success rate to be about 60 percent. (Terres 1980, Riegner 1998)
The Little Blue Heron is sometimes referred to as the blue crane, levee walker, or little blue crane.
They have a commensal relationship with White Ibises (Eudocimus albus). The ibises stir up food as they walk, increasing the number of prey available to the Little Blue Herons. The herons benefit, while the ibises are unaffected. (Riegner 1998, Terres 1980)
Perception Channels: visual ; tactile ; acoustic ; chemical
The major problem facing these birds is the loss of their wetland habitats. Little Blue Herons need clean, undisturbed wetlands for feeding and breeding. Colonies are being lost because of clear cutting of forests, and draining of ponds, lakes, and wetlands. The use of pesticides has also caused eggshell thinning. The population has been decreasing and the Little Blue Heron is considered threatened and of special concern in some coastal areas. (Katusic 1998, Riegner 1998)
US Migratory Bird Act: protected
US Federal List: no special status
CITES: no special status
State of Michigan List: no special status
IUCN Red List of Threatened Species: least concern
The Little Blue Heron has no negative affect on humans.
The Little Blue Heron is enjoyable to watch and helps control insect populations. (Riegner 1998)
The Little Blue Heron is found along the Atlantic coast from Massachusetts to Florida, but is most abundant along the Gulf of Mexico. It also nests in the West Indies, and along both Mexican coasts through Central America and into South America. Its range can also extend into the Amazon Basin, the Caribbean, and the more northern regions of North America. (Riegner 1998)
Biogeographic Regions: nearctic (Native ); neotropical (Native )
Although Egretta caerulea often lives near saltwater, it is mainly an inland bird. They prefer freshwater areas such as ponds, lakes, marshes, swamps, and lagoons, but also sometimes occupy flooded and dry grasslands, or marine coastlines. (Riegner 1998, Terres 1980, Tarski 2001)
Terrestrial Biomes: forest ; rainforest ; scrub forest
Average lifespan
Status: wild: 167 months.
The Little Blue Heron is a small, dark bird that ranges from 63-74 centimeters in length. It can have a wingspread of up to 1.04 meters. The sexes look similar, but the young look very different from the adults. An adult can be recognized by its purple-maroon head and neck. The rest of the plumage is slate gray. The long neck is usually held in an "S" shaped curve while the bird is at rest or in flight. The heron's long, slender bill curves slightly downward, and is also dark gray but has a black tip. The eyes are yellow and the legs and feet are dark. The young are unlike any other heron because they have all white body plumage. They have a blue bill with a black tip and dull green legs. They stay white through their first summer, fall, and into winter, but start molting in February into the dark color of an adult. (Terres 1980; Tarski 2001)
Average mass: 396 g.
Other Physical Features: endothermic ; bilateral symmetry
Average mass: 215.6 g.
The pale, blue-green eggs of the Little Blue Heron are laid in April. They can lay from 3-5 eggs, but on average lay 4-5. This process takes 5-8 days, with one egg being laid every other day. Both sexes incubate the eggs until they hatch in 22-24 days, and then quickly remove the eggshells from the nest. It may take about 5 days for all of the chicks to emerge. Although the young can raise their heads, they spend most of their time lying on the nest floor. Both parents feed them by dropping food into the nest and later placing it directly into the chicks' mouths. In about 3 weeks, the young are ready to leave the nest for short trips along surrounding branches. When they are 30 days old, they are able to fly and periodically leave the nest area. Soon after, at 42-49 days, the young are on their own. Little Blue Herons can breed when they are one year old. They have been recorded as living more than 7 years in the wild. (Riegner 1998, Terres 1980, Katusic 1998)
Key Reproductive Features: iteroparous ; gonochoric/gonochoristic/dioecious (sexes separate); sexual ; oviparous
Average time to hatching: 23 days.
Average eggs per season: 4.
A medium-sized (24 inches) wader, the Little Blue Heron is most easily identified by its size, blue body, purplish neck, and gray bill tipped with black. Other field marks include dull yellow-green legs, dark eyes, and (unlike most herons) a lack of ornamental breeding plumes during the breeding season. Immature birds are all white, but may be separated from other white herons and egrets by their yellow legs and gray bill. Male and female Little Blue Herons are similar to one another in all seasons. The Little Blue Heron breeds in the southeastern United States and along the Atlantic Coast of the U.S. north to Maine. Birds breeding in the interior spend the winter from southern California south to Panama. Coastal populations south of New Jersey, as well as those in the West Indies, are non-migratory. Little Blue Herons breed in colonies along shallow bodies of water, including marshes, lakes, and estuaries. Nests are usually built in the branches of trees above the water. Wintering birds generally utilize similar habitats as in summer. Little Blue Herons primarily eat small fish. Little Blue Herons may be best observed wading in shallow water, where they may be seen plunging their bills into the water to catch fish. It is also possible to see Little Blue Herons at their rookeries, especially when they return to roost at sunset, or while flying with their feet extended and their necks pulled in. Little Blue Herons are primarily active during the day.
A medium-sized (24 inches) wader, the Little Blue Heron is most easily identified by its size, blue body, purplish neck, and gray bill tipped with black. Other field marks include dull yellow-green legs, dark eyes, and (unlike most herons) a lack of ornamental breeding plumes during the breeding season. Immature birds are all white, but may be separated from other white herons and egrets by their yellow legs and gray bill. Male and female Little Blue Herons are similar to one another in all seasons. The Little Blue Heron breeds in the southeastern United States and along the Atlantic Coast of the U.S. north to Maine. Birds breeding in the interior spend the winter from southern California south to Panama. Coastal populations south of New Jersey, as well as those in the West Indies, are non-migratory. Little Blue Herons breed in colonies along shallow bodies of water, including marshes, lakes, and estuaries. Nests are usually built in the branches of trees above the water. Wintering birds generally utilize similar habitats as in summer. Little Blue Herons primarily eat small fish. Little Blue Herons may be best observed wading in shallow water, where they may be seen plunging their bills into the water to catch fish. It is also possible to see Little Blue Herons at their rookeries, especially when they return to roost at sunset, or while flying with their feet extended and their necks pulled in. Little Blue Herons are primarily active during the day.
Distribucion General: Se reproduce localmente desde la parte central y este de E.U.A. a lo largo de Centroamérica hasta Perú y Uruguay. Las poblaciones norteñas son migratorias e inviernan desde el sureste de E.U.A. hacia el sur.
Die kleinbloureier (Egretta caerulea) is seldsame swerwer wat in sentraal- en Suid-Amerika oorwinter. Dit is nog net 4 keer opgeteken aan die weskus naby Kaapstad. In Engels staan die voël bekend as die Little Blue Heron.
Die reier is middelgroot. Die snawel is liggrys met 'n swart punt terwyl die bene en bene groengrys is. Die volwasse voël is blougrys en die kop en nek is donkerder met 'n pers skakering. Die jong voël is wit en word maklik met die kleinwitreier verwar; dit het geelgroen bene en 'n duidelike tweekleursnawel. Die onvolwasse voël het grys vere plek-plek en lyk gevlek.
Die kleinbloureier (Egretta caerulea) is seldsame swerwer wat in sentraal- en Suid-Amerika oorwinter. Dit is nog net 4 keer opgeteken aan die weskus naby Kaapstad. In Engels staan die voël bekend as die Little Blue Heron.
Egretta caerulea ye una especie d'ave pelecaniforme de la familia Ardeidae[2][3] qu'habita na mayor parte del continente americanu.
Ye nativa d'América, dende Estaos Xuníos a Arxentina, y divagante en Groenlandia, Portugal, Sudáfrica y Uruguái.[1]
Esta especie puede llegar a midir de 55 a 60 cm d'altu, y pesar 350 g.
Alcuéntrase nel agua duce o salada. A diferencia de la mayoría de les garces, la garceta azul gústa-y convivir en grupu, anque munches vegaes puede reparáse-y solo cola so pareya.
La so alimentación consta de animales marinos como pexes, delles xaronques, y de inseutos. Puede tener de 3 a 7 güevos.
.
Esta páxina forma parte del wikiproyeutu Aves, un esfuerciu collaborativu col fin d'ameyorar y organizar tolos conteníos rellacionaos con esti tema. Visita la páxina d'alderique del proyeutu pa collaborar y facer entrugues o suxerencies. Egretta caerulea ye una especie d'ave pelecaniforme de la familia Ardeidae qu'habita na mayor parte del continente americanu.
An herlegon glas(Daveoù a vank) a zo un evn hirc'harek, Egretta caerulea (pe Hydranassa caerulea) an anv skiantel anezhañ.
Bevañ a ra diwar artropoded-dour (amprevaned ha kranked) dreist-holl, met ivez diwar akridi, c'hwiled, grilhed ha kevnid.
Bevañ a ra al labous en Amerika a-bezh, eus Stadoù-Unanet Amerika da greisteiz Brazil hag Uruguay[1].
a vo kavet e Wikimedia Commons.
An herlegon glas(Daveoù a vank) a zo un evn hirc'harek, Egretta caerulea (pe Hydranassa caerulea) an anv skiantel anezhañ.
El martinet blavós (Egretta caerulea) és un ocell de la família dels ardèids (Ardeidae) que habita aiguamolls, llacs, rierols i manglars des de l'est i sud-est dels Estats Units i nord-oest de Mèxic, cap al sud, a través de Mèxic, Amèrica Central i les Antilles, fins a Amèrica del Sud, a la llarga de la costa nord, el baix curs de l'Amazones, Brasil oriental, i ambdues vessants dels Andes fins al nord de Xile i el nord de Bolívia.
El martinet blavós (Egretta caerulea) és un ocell de la família dels ardèids (Ardeidae) que habita aiguamolls, llacs, rierols i manglars des de l'est i sud-est dels Estats Units i nord-oest de Mèxic, cap al sud, a través de Mèxic, Amèrica Central i les Antilles, fins a Amèrica del Sud, a la llarga de la costa nord, el baix curs de l'Amazones, Brasil oriental, i ambdues vessants dels Andes fins al nord de Xile i el nord de Bolívia.
Aderyn a rhywogaeth o adar yw Crëyr glas bach (sy'n enw gwrywaidd; enw lluosog: crehyrod glas bach) a adnabyddir hefyd gyda'i enw gwyddonol Egretta caerulea; yr enw Saesneg arno yw Little blue heron. Mae'n perthyn i deulu'r Crehyrod (Lladin: Ardeidae) sydd yn urdd y Ciconiformes.[1]
Talfyrir yr enw Lladin yn aml yn E. caerulea, sef enw'r rhywogaeth.[2] Mae'r rhywogaeth hon i'w chanfod yng Ngogledd America.
Mae'r crëyr glas bach yn perthyn i deulu'r Crehyrod (Lladin: Ardeidae). Dyma rai o aelodau eraill y teulu:
Rhestr Wicidata:
rhywogaeth enw tacson delwedd Aderyn bwn bach Ixobrychus exilis Aderyn bwn cefn rhesog Ixobrychus involucris
Aderyn a rhywogaeth o adar yw Crëyr glas bach (sy'n enw gwrywaidd; enw lluosog: crehyrod glas bach) a adnabyddir hefyd gyda'i enw gwyddonol Egretta caerulea; yr enw Saesneg arno yw Little blue heron. Mae'n perthyn i deulu'r Crehyrod (Lladin: Ardeidae) sydd yn urdd y Ciconiformes.
Talfyrir yr enw Lladin yn aml yn E. caerulea, sef enw'r rhywogaeth. Mae'r rhywogaeth hon i'w chanfod yng Ngogledd America.
Volavka modrošedá (Egretta caerulea) je středně velký druh volavky.
Dorůstá 60 cm, v rozpětí křídel měří 102 cm a její průměrná hmotnost činí 325 g. Jedná se o středně velkou volavku s dlouhým krkem a dlouhým, zašpičatělým, modrým nebo šedým zobákem s černým koncem. Pohlaví jsou zbarvena stejně. V létě jsou dospělí ptáci převážně modro-šedí s výjimkou světle červeného zbarvení na hlavě a krku, na kterém jsou patrná také prodloužená pera. Končetiny má tmavě modré. V mimohnízdním období mají hlavu a krk tmavě modrý a končetiny černé. Mladí ptáci jsou celí bílí se světle žlutými končetinami.
Její areál rozšíření sahá od států USA ležících při Mexickém zálivu přes Střední Ameriku a Karibik až po Peru a Uruguai.
Vyskytuje se v subtropických bažinách. Požírá ryby, žáby, korýše, malé hlodavce a hmyz. Hnízdí v koloniích, často společně s jinými druhy volavek. Hnízdo v podobě jednoduché plošiny z větví buduje na stromech nebo keřích. V jedné snůšce pak bývá 3-7 světle modrých vajec.
V tomto článku byl použit překlad textu z článku Little Blue Heron na anglické Wikipedii.
Obrázky, zvuky či videa k tématu volavka modrošedá ve Wikimedia Commons
Volavka modrošedá (Egretta caerulea) je středně velký druh volavky.
Der Blaureiher (Egretta caerulea) gehört zur Familie der Reiher aus der Ordnung Pelecaniformes.
Die Vögel werden 60 Zentimeter lang, mit einer Flügelspannweite von einem Meter und einem Gewicht von 325 Gramm. Sie sind mittelgroße Reiher mit einem langen Hals und einem langen, spitzen, blauen oder grauen Schnabel mit schwarzer Spitze. Erwachsene Vögel haben ein blau-graues Gefieder. Die Beine und Füße sind dunkelblau. Während der Brut färbt sich der Kopf und der Hals purpurfarben. Außerdem wachsen dort längere Schmuckfedern, Beine und Füße werden schwarz. Jungvögel sind weiß mit gelben Beinen. Mit dem Älterwerden werden sie zunehmend blau.
Der Blaureiher lebt in Sümpfen in den an den Golf von Mexiko angrenzenden Staaten der USA, in Mittelamerika, auf den Inseln der Karibik und in Südamerika bis Peru und Uruguay. Einzelne Tiere wandern nach der Brutsaison weit nach Norden bis zur Grenze Kanadas.
Der kleine blaue Reiher ernährt sich von Fischen, Krebstieren und Insekten, denen er im flachen Wasser oder auf einem Ast am Ufer sitzend auflauert.
Er nistet in Kolonien, häufig zusammen mit anderen Reihern, auf Bäumen oder in Sträuchern. Es werden 3 bis 7 hellblaue Eier gelegt.
Der Blaureiher (Egretta caerulea) gehört zur Familie der Reiher aus der Ordnung Pelecaniformes.
The little blue heron[note 1] (Egretta caerulea) is a small heron of the genus Egretta. It is a small, darkly colored heron with a two-toned bill. Juveniles are entirely white, bearing resemblance to the snowy egret. During the breeding season, adults develop different coloration on the head, legs, and feet.
They have a range that encompasses much of the Americas, from the United States to northern South America. Some populations are migratory. Climate change will probably cause their distribution to spread north. They can be found in both saltwater and freshwater ecosystems. Their preference for either one depends on where they live.
Nesting behaviors are documented by numerous sources. The adults build nests in trees, in colonies with other bird species. The number of eggs laid varies from place to place. The young mature quickly, requiring little attention from adults after about nineteen days of age. Both young and adults are sometimes preyed on by other species. Adults hunt fish, crabs, and other small animals. As with clutch sizes, diet can vary regionally.
The population of E. caerulea is declining. Many possible reasons for this have been proposed. Exposure to heavy metals has been found to have detrimental effects on young birds.
The little blue heron is part of the family Ardeidae, a group whose members can be found throughout much of the world, including the Americas, Africa, Asia, and Oceania.[3] It was first described as Ardea caerulea by Carl Linnaeus in his 10th edition of Systema Naturae.[4] It is now a member of the genus Egretta.[3] It may be closely related to the snowy egret, another member of its genus, which it greatly resembles when young.[5] Variations of the name include Ardea coerulea, Florida caerulea, and Hydranassa caerulea.[2]
Young birds found in a little blue heron nest in North Dakota, at a site heavily populated by cattle egrets (Bubulcus ibis), which displayed traits of both the former and latter, are believed to be an example of hybridization between the two species.[6] Other species they are known to hybridize with include the tricolored heron, little egret, snowy egret, and black-crowned night heron. Of these four, only the black-crowned night heron is not a member of Egretta.[2]
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Males and females have the same coloration. The adults are darkly colored, with purple-maroon heads and blue bodies. During the breeding season, their heads turn dark red. They have two-toned bills, which are a light blue at the base, with black tips. Their eyes are yellow and their legs are greenish. Juveniles are almost completely white, although the upper primaries are somewhat dark in color. Like adults, their bills are two-toned. Immature birds transitioning from the juvenile to adult phase have a combination of light and dark feathers. Both sexes are about 56–74 centimetres (22–29 in), with a wingspan of 100–105 centimetres (39–41 in). They weigh about 397 grams (14.0 oz).[7][8]
The lores, which are normally a dull green become a shade of turquoise. They also develop long plumes on the crest and back, which can stretch 20–30 centimetres (7.9–11.8 in) past the tail. The legs and feet become black.[9] The eggs are typically smooth, light blue, and unmarked. In size, they are about 31.7–43.2 millimetres (1.25–1.70 in), with a weight of around 23.1 grams (0.81 oz).[10]
Egretta caerulea can be found regularly in the United States, Mexico, Central America, northern South America (including Venezuela, Colombia, and Peru), and numerous Caribbean islands (including Cuba, Jamaica, and Hispaniola). They have been recorded as a vagrant (a species that appears far outside its natural range) in Greenland, Portugal, and South Africa. Whether or not their range is declining is unknown.[1] In the United States, they can be found from Missouri to Virginia to Florida. They are more common in peninsular Florida than the Florida Panhandle.[7] They can occasionally roam as far north as Canada.[3]
Individuals in central Alabama tend to migrate towards South America and the Caribbean, while those from the Mississippi River west travel to Mexico and Central America.[3] One study found that of seven migratory wading bird species, the little blue heron had the greatest mean dispersal distance, of 1,148 kilometres (713 mi).[11]
Future climate change is projected to increase its overall range. If global warming continues at its current rate, by the year 2080, its summer range will have increased by 87%. Of its current range, it is expected to lose only 1%. These gains would spread its summer distribution well into more northern parts of the US, such as Michigan and Minnesota, and even into southern Canada.[5]
The little blue heron can be found in freshwater and marine environments. These include mangrove forests, bogs, swamps, salt marshes, tidal flats, estuaries, streams, and flooded fields.[1][8] They are usually found at low elevations, but can be seen at heights of 3,700 metres (12,100 ft) in the Andes.[9]
In North America, they tend to favor freshwater habitats, while in the Caribbean, they are more often found in saltwater.[5] Towards the southern extent of their range, in Brazil, they are found almost exclusively along the coast, rarely venturing inland at all.[10]
Juveniles in San Blas, in the Mexican state of Nayarit have an atypical color-scheme. In these birds, the top of the head is chestnut colored and the wings tips are much darker. Initially, it was suggested that they may be hybrids, however further study concluded they were most likely a natural variation.[12] No other geographic varieties have been observed.[9]
Little blue herons prefer to stand still and wait when hunting, rather than chase after prey. They walk slowly and search for fish and other prey items, flying to different spots if needed. They tend to move slower than other related species, which can help distinguish them. They are not usually found in large numbers at any body of water. Occasionally, however, they will gather with other herons, especially if they have found a school of fish trapped in shallow water.[8] They sometimes also feeds in grassy fields.[5]
During courtship, both males and females practice bill-nibling. Males also use a neck-stretch to attract mates.[13]
Little blue herons typically nest in trees alongside other roosting birds.[8] They are colonial nesters (nesting in groups). Examples of species they may nest alongside include the scarlet ibis, yellow-crowned night heron, great egret, black-crowned night heron, and snowy egret.[10]
During nest construction, males bring twigs to females, who use them to build the nest. Both males and females help incubate their clutch.[13] They begin incubation after two eggs have been laid, which will cause any later eggs to hatch out of sync. The chicks that hatch later tend to not receive as much food as early-hatching ones, which limits their growth.[14] Clutch sizes vary significantly throughout their range. In Trinidad, there are usually 2–5 eggs, while in Costa Rica, only 2–4 are laid on average. In North America, the mean is 2.67–4.4. The very lowest values are seen in southeastern Brazil and the US states Florida and Georgia, where no more than three are generally laid.[10]
Young herons are able to start climbing around the branches by their nests at 15 days old.[10] Due to the young age at which they develop motor skills in their legs, the young do not rely on their parents for anything besides feeding after 19 days, at which point the adults begin foraging away from the nest.[14] By 20–25 days, they can climb to the very top of the tree their nest is built on, or even into other trees. They can fly short distances at around 30 days of age (some take 35–38), but will still be dependent on adults for about two weeks after that.[10] It is in their second year of life that juveniles begin to lose their white feathers.[9]
There is circumstantial evidence that young black-crowned night herons and crab-eating raccoons prey on nestling little blue herons. Adults have been observed driving a yellow-headed caracara away from their nests. In the presence of a Harris' hawk, however, the little blue herons fled.[10]
Twenty-four different species of parasitic worms were found on 33 of 35 little blue herons examined in South Florida. These included trematodes, nematodes, acanthocephalans, and one cestode. The most common trematode was Posthodiplostomum macrocotyle, and the most common nematodes were Contracaecum multipapillatum and Contracaecum microcephalum. The acanthocephalan and cestode species could not be identified (in the latter, neither could the genus).[15]
On the eastern coast of North America, little blue herons primarily feed on fish, however their diet varies significantly throughout their range.[9] In a study of individuals in mangrove forests in southeastern Brazil, 80% of their diet during the breeding season was found to consist of crabs. Compared to the scarlet ibis, the herons preferred arboreal or semi-arboreal species, such as Aratus pisonii and Metasesarma rubripes, while the former preferred to take burrowing species. This demonstrates their different feeding strategies—scarlet ibises being foragers who hunt using their sense of touch and little blue herons being visual hunters.[16] In another mangrove forest in southwestern Puerto Rico, the entire diet was found to consist of fiddler crabs.[17]
The little blue heron is listed as a least-concern species by the International Union for the Conservation of Nature, although its numbers are decreasing.[1] Historically, they were not hunted for their feathers as much as other heron species due to their lack of visually attractive plumes.[8]
The dangers faced by Egretta caerulea are not well researched. They could include development along coastlines, habitat disturbance, predators, pesticide exposure, and parasites.[7] The metals cadmium and lead have been found to lead to slower growth rates and higher death rates, respectively, of young birds.[18] In Sepetiba Bay, Rio de Janeiro, Brazil, little blue herons were found to have relatively high levels of metal contamination in the liver and kidneys.[19]
In areas with cattle egrets, little blue herons have been found to nest for shorter amounts of time, and produce fewer young that survive to adulthood. Cattle egrets only begin pairing when most little blue herons already have eggs or live young in their nests. The former species has been observed stealing twigs from nests of the latter. This behavior sometimes leads to the young falling out of the nest or the cattle egrets removing them.[20]
Little blue heron The little blue heron (Egretta caerulea) is a small heron of the genus Egretta. It is a small, darkly colored heron with a two-toned bill. Juveniles are entirely white, bearing resemblance to the snowy egret. During the breeding season, adults develop different coloration on the head, legs, and feet.
They have a range that encompasses much of the Americas, from the United States to northern South America. Some populations are migratory. Climate change will probably cause their distribution to spread north. They can be found in both saltwater and freshwater ecosystems. Their preference for either one depends on where they live.
Nesting behaviors are documented by numerous sources. The adults build nests in trees, in colonies with other bird species. The number of eggs laid varies from place to place. The young mature quickly, requiring little attention from adults after about nineteen days of age. Both young and adults are sometimes preyed on by other species. Adults hunt fish, crabs, and other small animals. As with clutch sizes, diet can vary regionally.
The population of E. caerulea is declining. Many possible reasons for this have been proposed. Exposure to heavy metals has been found to have detrimental effects on young birds.
La Blua egreto (Egretta caerulea) estas malgranda ardeo nome birdospecio de la familio de Ardeedoj propra de la plej parto de la marbordaj areoj de Ameriko. Ĝi estis foje lokita en la unuspecian genron Florida.
Ĝi reproduktiĝas el la Golfaj ŝtatoj de Usono tra Centrameriko kaj Karibio suden al Peruo kaj Urugvajo. Ĝi estas specio de loĝantaj birdoj en plej el sia teritorio, sed kelkaj nordaj reproduktuloj migras al sudorienta Usono aŭ pli fore vintre. Okazas postreprodukta disiĝo tre norden de sia reprodukta teritorio, tiom for kiom ĝis la limo inter Usono kaj Kanado. Ili estas vagantoj en Gronlando, Portugalio, Sudafriko kaj Urugvajo.[1]
La reprodukta habitato de la Blua egreto estas subtropikaj marĉoj. Ĝi povas loĝi ĝis 3,000 m super marnivelo en Andoj, kaj escepte ĝis 3,750 m.
Tiu specio estas ĉirkaŭ 60 cm longa, kun enverguro de 102 cm kaj pezo de 325 g. Ĝi estas mezgranda, longkrura ardeo kun longa pinteca blua aŭ grizeca beko kun nigra pinto, kiu estas iomete subenkurba.
Reproduktaj plenkreskuloj havas bluecgrizan plumaron escepte pro la kapo kaj kolo, kiuj estas purpurecaj kaj havas longajn bluecajn fadenecajn plumojn. La kruroj kaj piedoj estas malhelbluaj. Ambaŭ seksoj estas similaj.
Nereproduktantaj plenkreskuloj havas malhelbluajn kapajn kaj kolajn plumarojn kaj pli palajn krurojn. Junuloj estas tutblankaj escepte pro malhelaj flugilpintoj kaj havas senkolorecajn verdecajn krurojn. Ili laŭgrade akiras bluan plumaron dum ili maturiĝas.
Estas pli gregema specio ol aliaj ardeoj, sed vdiĝas ofte en paroj.
La blankaj ekzempleroj de Blua egreto ofte mikse konfuziĝas kun individuoj de Blanka egreto. La Blanka egreto toleras ties eston pli ol tiun de la Blua egreto en plenkreska plumaro. Tiuj junaj birdoj fakte kaptas pli da fiŝoj en ĉeesto de la Blanka egreto kaj ankaŭ gajnas protekton kontraŭ predantoj kiam ili miksiĝas en aroj de Blankaj egretoj. Eble pro tio ili restas blankaj la unuan jaron.[2]
La Blua egreto gvatoĉasas sian predon metode en neprofunda akvo ĉefe mara, ofte kuretante dume. Ili manĝas fiŝojn, ranojn, krustulojn (kraboj), malgrandajn rodulojn kaj insektojn (koleopteroj, griloj, kaj araneoj).
La reprodukta habitato de la Blua egreto estas subtropikaj marĉoj. Ili nestumas en kolonioj, ofte kun aliaj ardeoj, kutime sur platformoj el bastonetoj en arboj aŭ arbustoj. La ino demetas 3-7 helbluajn ovojn.
Ĉasanta plenkreskulo
Pinĉileca beko, kaptinte ranon
Nereprodukta plenkreskulo
Junulo en Jamajko
Plenkreskulo de Blua egreto
Junulo
Flave reproduktejoj, blue vintrejoj, verde la tutan jaron
Junulo
La Blua egreto (Egretta caerulea) estas malgranda ardeo nome birdospecio de la familio de Ardeedoj propra de la plej parto de la marbordaj areoj de Ameriko. Ĝi estis foje lokita en la unuspecian genron Florida.
La garceta azul o garza azul (Egretta caerulea) es una especie de ave pelecaniforme de la familia Ardeidae[2][3] que habita en la mayor parte del continente americano.
Es nativa de América, desde Estados Unidos a Argentina, y divagante en Chile, Groenlandia, Portugal, Sudáfrica y Uruguay.[1]
Esta especie puede llegar a medir de 55 a 60 cm de alto, y pesar 350 g.Tiene las patas largas al igual que el pico.
Se encuentra en el agua dulce o salada. A diferencia de la mayoría de las garzas, la garceta azul le gusta convivir en grupo, aunque muchas veces se le puede observar solo con su pareja.
Su alimentación consta de animales marinos como peces, algunas ranas, y de insectos. Puede poner de 3 a 7 huevos.
La garceta azul o garza azul (Egretta caerulea) es una especie de ave pelecaniforme de la familia Ardeidae que habita en la mayor parte del continente americano.
Egretta caerulea Egretta generoko animalia da. Hegaztien barruko Ardeidae familian sailkatua dago.
Egretta caerulea
L’Aigrette bleue (Egretta caerulea) est une espèce d'oiseaux de la famille des Ardéidés[1]. Elle est parfois placée dans le genre monospécifique Florida[2].
L'aigrette bleue mesure 51 à 76 cm pour une masse de 350 g environ. Sa coloration générale est bleu mauve avec la tête et le cou violacés. Le bec grisâtre présente une large base et une extrémité plus sombre. Il apparaît légèrement incurvé.
Le jeune est tout blanc avec les extrémités des rémiges primaires grises et les pattes verdâtre pâle. L'immature plus âgé se tache progressivement de gris bleu.
Cette espèce vit en Amérique.
Cet oiseau fréquente principalement les zones humides intérieures : étangs, lacs, marais, prés inondés et rizières. Il se rencontre aussi dans les milieux saumâtres et côtiers, mangroves par exemple.
Il monte en altitude jusqu'à 3 000 m dans les Andes, exceptionnellement jusqu'à 3 750 m.
L'aigrette bleue se nourrit surtout d'arthropodes aquatiques (crabes et insectes aquatiques) mais aussi de coléoptères, de grillons, de criquets et d'araignées.
Egretta caerulea
L’Aigrette bleue (Egretta caerulea) est une espèce d'oiseaux de la famille des Ardéidés. Elle est parfois placée dans le genre monospécifique Florida.
L'airone azzurro minore (Egretta caerulea (Linnaeus, 1758)) è un uccello della famiglia degli Ardeidi.[1][2]
L'airone azzurro minore (Egretta caerulea (Linnaeus, 1758)) è un uccello della famiglia degli Ardeidi.
Mažasis melsvasis garnys (lot. Egretta caerulea, angl. Little Blue Heron, vok. Blaureiher) – garninių (Ardeidae) šeimos paukštis.
Tai mažas garnys, besiveisiantis Meksikos įlankos pakrančių šalyse, centrinėje Amerikoje, Karibuose ir piečiau iki Peru bei Urugvajaus. Dauguma veisiasi ten pat, kur gyvena, išskyrus kai kuriuos šiaurinių vietovių paukščius, kurie žiemą migruoja pietryčių kryptimi į JAV ar toliau. Po veisimosi pasiskirsto šiauriau nuo lizdų (iki JAV ir Kanados sienos).
Ši rūšis yra apie 60 cm ilgio, sparnų plotis 102 cm, sveria 325 g. Ilgakojai, su ilgu aštriu melsvu ar pilkšvu snapu juodu galiuku.
Besiveisiantys suaugę paukščiai yra melsvai pilkos spalvos, išskyrus violetinio atspalvio galvą ir kaklą. Kojos ir pėdos tamsiai mėlynos.
Neperinčių suaugusių paukščių galva ir kaklas tamsiai mėlyni, kojos blyškesnės spalvos. Jaunikliai būna visiškai balti, išskyrus tamsius sparnų galiukus bei gelsvas kojas; įgyja melsvas plunksnas palaipsniui bręsdami.
Mažieji melsvieji garniai veisiasi subtropinėse pelkėse. Lizdus suka kolonijomis, dažnai su kitais vandens paukščiais, paprastai medžiuose ir krūmuose. Lizde 3-7 kiaušiniai.
Grobį gaudo sekliame vandenyje, dažnai bėgte. Minta žuvimi, vėžiagyviais ir vabzdžiais.
Mažasis melsvasis garnys (lot. Egretta caerulea, angl. Little Blue Heron, vok. Blaureiher) – garninių (Ardeidae) šeimos paukštis.
Tai mažas garnys, besiveisiantis Meksikos įlankos pakrančių šalyse, centrinėje Amerikoje, Karibuose ir piečiau iki Peru bei Urugvajaus. Dauguma veisiasi ten pat, kur gyvena, išskyrus kai kuriuos šiaurinių vietovių paukščius, kurie žiemą migruoja pietryčių kryptimi į JAV ar toliau. Po veisimosi pasiskirsto šiauriau nuo lizdų (iki JAV ir Kanados sienos).
Ši rūšis yra apie 60 cm ilgio, sparnų plotis 102 cm, sveria 325 g. Ilgakojai, su ilgu aštriu melsvu ar pilkšvu snapu juodu galiuku.
Besiveisiantys suaugę paukščiai yra melsvai pilkos spalvos, išskyrus violetinio atspalvio galvą ir kaklą. Kojos ir pėdos tamsiai mėlynos.
Neperinčių suaugusių paukščių galva ir kaklas tamsiai mėlyni, kojos blyškesnės spalvos. Jaunikliai būna visiškai balti, išskyrus tamsius sparnų galiukus bei gelsvas kojas; įgyja melsvas plunksnas palaipsniui bręsdami.
Mažieji melsvieji garniai veisiasi subtropinėse pelkėse. Lizdus suka kolonijomis, dažnai su kitais vandens paukščiais, paprastai medžiuose ir krūmuose. Lizde 3-7 kiaušiniai.
Grobį gaudo sekliame vandenyje, dažnai bėgte. Minta žuvimi, vėžiagyviais ir vabzdžiais.
De kleine blauwe reiger (Egretta caerulea) is een vogel uit de familie van de reigers (Ardeidae).
De kleine blauwe reiger bereikt een grootte van ongeveer 60 cm, een spanwijdte van een meter en een gewicht van 325 gram. Het is een middelgrote reiger met een lange nek en een lange, spitse, blauwe of grijze snavel met een zwarte punt. Volwassen vogels hebben een blauwgrijs verenkleed. De poten zijn donkerblauw. Tijdens de broedperiode zijn het hoofd en de nek paars. Jonge vogels zijn wit met gele poten.
De kleine blauwe reiger leeft in moerassen in de V.S. in staten die grenzen aan de Golf van Mexico, in Centraal-Amerika, de eilanden van de Caraïben en Zuid-Amerika. Sommigen trekken na het broedseizoen ver naar het noorden, tot aan de grens van de V.S. met Canada.
De kleine blauwe reiger voedt zich met vis, schaaldieren en insecten, waar hij op jaagt vanuit ondiep water of van op de wal, zittend op een tak. Hij broedt in kolonies, vaak met andere reigersoorten, op bomen of struiken. Het vrouwtje legt 3 tot 7 lichtblauwe eieren.
Blåhegre (Egretta caerulea) er en fugl i hegrefamilien.
Inndelingen under følger HBW Alive og er i henhold til Martínez-Vilalta & Motis (2018).[2] Norske navn på artene følger Norsk navnekomité for fugl og er i henhold til Syvertsen et al. (2008, 2017).[3][4] Navn og beskrivelser i parentes er ikke offisielle, men kun foreløpige beskrivelser.
Denne ornitologirelaterte artikkelen er foreløpig kort eller mangelfull, og du kan hjelpe Wikipedia ved å utvide den. Blåhegre (Egretta caerulea) er en fugl i hegrefamilien.
Multimedia w Wikimedia Commons Czapla śniada (Egretta caerulea) – gatunek ptaka z rodziny czaplowatych (Ardeidae). Występuje w przymorskich i słodkowodnych mokradłach, bagnach Ameryki Północnej do Ameryki Południowej. Pióra niebieskie, głowa i szyja ciemnokasztanowate. Dziób niebieskawy z czarną końcówką. Tęczówki żółte. Długość ciała 55-65 cm[4].
Czapla śniada (Egretta caerulea) – gatunek ptaka z rodziny czaplowatych (Ardeidae). Występuje w przymorskich i słodkowodnych mokradłach, bagnach Ameryki Północnej do Ameryki Południowej. Pióra niebieskie, głowa i szyja ciemnokasztanowate. Dziób niebieskawy z czarną końcówką. Tęczówki żółte. Długość ciała 55-65 cm.
A garça-azul (Egretta caerulea) é uma garça encontrada do sul dos Estados Unidos ao sul do Brasil e Uruguai, em lamaçais do litoral. Chega a medir até 52 cm de comprimento, tendo uma coloração escura com tons azulados.[2][3] Também é conhecida pelo nome de garça-morena.[4]
A Egretta caerulea foi descrita por Lineu em 1758.[5] Faz parte da ordem Pelecaniformes, da família Ardeidae e do gênero Egretta.[6]
A garça-azul pode ser encontrada ao longo das Américas, indo desde os Estados Unidos ao Uruguai. Outros países incluem Bolívia, Brasil, Chile, Colômbia, Equador, as Guianas, Paraguai, Peru, Suriname e Venezuela.[3][7]
A espécie mede entre 64–76 cm (25–30 in) de comprimento,[8] com uma envergadura de 102 cm (40 in)[9] e pesa 325 g (11 oz).[10]
É uma garça de porte médio-grande, de pernas compridas, com um bico longo e pontiagudo, azul claro ou acinzentado, com a ponta mais escura ou preta.[9] O corpo é mais alongado do que na garça-branca-pequena.[7]
Os pássaros adultos reprodutores têm plumagem cinza-azulada, exceto a cabeça e o pescoço, que são arroxeados e têm longas plumas filamentosas azuis. As pernas e pés são azul-escuros / verdes ou esverdeados.[8] As fêmeas e os machos são semelhantes.[9]
Os adultos não reprodutores têm a cabeça e a plumagem do pescoço azul-escuras e as pernas mais claras. Os pássaros jovens são todos brancos no primeiro ano, exceto pelas pontas das asas escuras e têm patas esverdeadas opacas. Na primeira primavera ou primeiro verão, adquirem gradualmente a plumagem escura dos adultos.[7][9]
Esta espécie é bastante semelhante à Egretta rufescens, que é maior e possui bico maior. As garças-azuis jovens são semelhantes às garças-brancas-pequenas jovens.[11]
A espécie prefere pântanos de água doce e lagoas no sul, enquanto nas ilhas do norte habitam bosques costeiros.[8] Reproduz-se em pântanos subtropicais e tropicais com vegetação de mangue e pântanos.[1]
A garça-azul nidifica em colônias, geralmente com outras garças, geralmente em plataformas de gravetos em árvores ou arbustos. São postos de três a sete ovos azul-claros.
Espreita metodicamente sua presa em águas rasas, frequentemente correndo. Come peixes, sapos, crustáceos, pequenos roedores e insetos. Alimenta-se mais de insetos do que as garças maiores.[8] Aproveita-se da maré baixa para se alimentar.[12] Os adultos geralmente se alimentam sozinhos, enquanto os imaturos costumam se alimentar em grupos.[8]
A espécie costuma se misturar com a garça-branca-pequena. A garça-branca tolera mais sua presença do que garças-reais em plumagem adulta. Essas aves jovens pegam mais peixes quando na presença da garça-branca e também ganham uma medida de proteção contra predadores quando se misturam em bandos de garças-brancas. É plausível que, por causa dessas vantagens, permaneçam brancas no primeiro ano.[7]
A garça-azul (Egretta caerulea) é uma garça encontrada do sul dos Estados Unidos ao sul do Brasil e Uruguai, em lamaçais do litoral. Chega a medir até 52 cm de comprimento, tendo uma coloração escura com tons azulados. Também é conhecida pelo nome de garça-morena.
Blåhäger[2] (Egretta caeruela) är en medelstor slank häger med hemvist i Amerika.[3]
Blåhägern är en 56–74 centimeter hög häger med långa ben och lång hals och ett vingspann på omkring en meter. Den väger tre till fyra hekto. Den adulta dräkten är karakteristiskt gråblå med lilaktig hals.
Blåhägern har en juvenil fas det första året med helvit dräkt. Vita blåhägrar accepteras lättare än blå blåhägrar av snöhägrar. Eftersom blåhägern fångar mer fisk i närvaro av snöhägrar än ensam är det en möjlig förklaring till den helvita dräkten som juvenil.
Blåhägern påträffas i södra Nordamerika, Centralamerika, Karibien och norra Sydamerika, från USA till Uruguay och Västindien.[3] Den är en mycket sällsynt gäst i Europa, med endast ett fynd vardera i Storbritannien och Irland, båda 2008, och fem i Azorerna.[4] Den har även setts i Sydafrika.[1]
Arten återfinns vid grunda vatten som sumpmark, floder, sjöar, översvämmade odlingar. Där födosöker den efter småfisk men också små amfibier, kräftdjur, gräshoppor, trollsländor och andra ryggradslösa djur. Jämfört med exempelvis snöhäger (Egretta thula) rör den sig långsammare och mer metodiskt genom att stå vid grunda vatten och vänta eller långsamt smyga sig på bytet.
Boet byggs i träd eller buskar nära vatten. Hanen samlar material, främst kvistar, till boet som byggs av honan. Äggen är grönblå. I en kull finns typiskt tre till fem ägg som ruvas i 22–24 dagar.
Blåhägern slapp de utbredda förföljelserna av hägrar som förekomm under 1800-talet i jakt på deras plymer, helt enkelt för att blåhägern till skillnad från ägretthäger och snöhäger saknar dessa i sin häckningsdräkt. Idag har arten ett stort utbredningsområde och en stor population, men tros minska i antal, dock inte tillräckligt kraftigt för att den ska betraktas som hotad.[1] IUCN kategoriserar därför arten som livskraftig (LC).[1] Mellan 1966 och 2015 minskade arten med 55% i Nordamerika.
Wikimedia Commons har media som rör blåhäger.
Blåhäger (Egretta caeruela) är en medelstor slank häger med hemvist i Amerika.
Küçük mavi balıkçıl[1] (Egretta caerulea) balıkçılgiller (Ardeidae) familyasından bir kuş türü. ABD'nin güneydoğusundan Orta Amerika ve Karayipler üzerinden güneyde Peru ve Uruguay'a kadar olan bölgede yaşar. Kışları kuzeyde yaşayan popülasyonlarının güneye göçmesi dışında göçmen değildir.
Boyu 60 cm, kanat açıklığı 102 cm ve ağırlığı 325 g'dır. Orta büyüklükte uzun bacaklı bu balıkçılın ince uzun mavi ya da grimsi gagasının sivri ucu siyah renklidir. Üreme döneminde erişkin kuşların baş ve boyun dışında tüyleri mavi-gri renklidir. Baş ve boyun tüyleri ise morumsu renklidir ve ince uzun tüyleri vardır. Ayak ve bacaklar koyu mavi renklidir. Erkek ve dişinin tüyleri birbirine benzer. Üreme dönemi dışında ise erişkinlerin baş ve boyun tüyleri koyu mavi renklidir ve bacakları daha soluk renklidir. Genç kuşların koyu renkli kanat uçları dışında tüyleri beyazdır. Bacakları ise mat yeşilimsi renktedir. Genç kuşlar erişkinliğe doğru mavi tüylerine kavuşur.
Küçük mavi balıkçıl subtropikal bataklıklarda yaşar. Sıklıkla diğer balıkçıl türleri ile birlikte koloniler hâlinde yaşar. Ağaç ya da çalılıkların üzerine çalı çırpıdan yapılmış platformlara yuvalanırlar. Dişi bir kerede üç ila yedi açık mavi renkli yumurta yumurtlar.
Sığ sularda avını takip eder ve peşinden koşar. Balık, kurbağa, kabuklular, küçük kemirgenler ve böceklerle beslenirler.
Küçük mavi balıkçıl (Egretta caerulea) balıkçılgiller (Ardeidae) familyasından bir kuş türü. ABD'nin güneydoğusundan Orta Amerika ve Karayipler üzerinden güneyde Peru ve Uruguay'a kadar olan bölgede yaşar. Kışları kuzeyde yaşayan popülasyonlarının güneye göçmesi dışında göçmen değildir.
Egretta caerulea là một loài chim trong họ Diệc.[2]
Egretta caerulea
Linnaeus, 1758
Гнездовой ареал Круглогодично
Только зимой
Ма́лая голуба́я ца́пля[1] (лат. Egretta caerulea) — вид птиц из рода белые цапли.
Этих темно-серых цапель можно встретить около стоячих водоемов в тропиках и субтропиках Америки. В Андах их наблюдали на высоте 2500-3000 м, единичные особи поднимаются на высоту до 3750 м. Питаются насекомыми и другими членистоногими. Корм добывают на мелководье или земле. Гнездятся многочисленными колониями, насчитывающими сотни гнезд, на земле, в кустах или на низких деревьях.
Размах крыльев — 60 см, вес — 325 г. Окраска в основном темно-синяя, ноги светлые.
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Неполовозрелая особь в зимнем наряде
Ма́лая голуба́я ца́пля (лат. Egretta caerulea) — вид птиц из рода белые цапли.
保全状況評価 LEAST CONCERN
分類 界 : 動物界 Animalia 門 : 脊索動物門 Chordata 亜門 : 脊椎動物亜門 Vertebrata 綱 : 鳥綱 Aves 目 : ペリカン目 Pelecaniformes 科 : サギ科 Ardeidae 属 : コサギ属 Egretta 種 : ヒメアカクロサギ E. caerulea 学名 Egretta caerulea 和名 ヒメアカクロサギ 英名 Little Blue Heron スミレサギ（菫鷺）、正しくはヒメアカクロサギ（姫赤黒鷺、学名:Egretta caerulea）は、ペリカン目サギ科に分類される鳥類の一種である。
注意：検索見出し「スミレサギ」は誤り。ヒメアカクロサギが正しい。訂正方法分からず、内容は編集したが表題は放置。
アメリカ東部から、中央アメリカ、南アメリカ北部（ペルーからウルグアイまで）にかけて分布する。北方で繁殖した個体は冬季越冬のため移動する。
体長約64-74 cm。小型のサギ。頭部から頸にかけては暗い赤褐色［和名の由来がこれ］で、それ以外の体全体は黒みがかった青紫色である。眼先と嘴は灰色で、脚は青色がかった灰色である。
沼地や干潟などに生息する。
水辺の樹木ややぶの中に、雄が巣材となる木の枝を集め雌が造巣する。1腹2-5個の卵を産み、抱卵期間は21-24日である。抱卵、育雛とも雌雄共同で行う。雛は35-40日で巣立ちする
この項目は、鳥類に関連した書きかけの項目です。この項目を加筆・訂正などしてくださる協力者を求めています（ポータル鳥類 - PJ鳥類）。 スミレサギ（菫鷺）、正しくはヒメアカクロサギ（姫赤黒鷺、学名:Egretta caerulea）は、ペリカン目サギ科に分類される鳥類の一種である。
注意：検索見出し「スミレサギ」は誤り。ヒメアカクロサギが正しい。訂正方法分からず、内容は編集したが表題は放置。
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