Scientists aim to describe a single 'tree of life' that reflects the evolutionary relationships of living things. However, evolutionary relationships are a matter of ongoing discovery, and there are different opinions about how living things should be grouped and named. EOL reflects these differences by supporting several different scientific 'classifications'. Some species have been named more than once. Such duplicates are listed under synonyms. EOL also provides support for common names which may vary across regions as well as languages.

Preferred marks the preferred classification for this taxon.

Recognized By Rank Classification
Species 2000 & ITIS Catalogue of Life: April 2013
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Genus Import Genus
Avian Mass Data Genus
BHL: BioDivLibrary's photostream Genus
BOLDS resource for higher-level taxa
BOLDS images II Genus
BOLDS resource for species-level taxa Genus
BioKIDS Critter Catalog Genus
Biome & Ecoregion Resource Genus
Bird Life History Genus
Birds resource Genus
Clements Checklist resource
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Colaboraciones Americanas Sobre Aves
  • Cardinalis
EOL Group on Flickr Genus
EOL Group on Flickr Genus
EOL Group on Flickr Genus
Global Biotic Interactions Genus
Global Biotic Interactions Genus
IUCN Red List Genus
IUCN Red List
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Animal Diversity Web Descriptions Genus Import Import
Integrated Taxonomic Information System (ITIS)
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MCZ resource Genus
Morphbank Resource Genus
NCBI Taxonomy
view in classification
NatureServe resource Genus
Nomenclator Zoologicus
  • Cardinalis Bonaparte 1838
OBIS Environmental Information
  • Cardinalis Bonaparte 1838
One-time import of archived NBII images Genus
Paleobiology Database
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Phthiraptera Genus
SPIRE resource
Smithsonian type specimen data Genus
AnAge database Genus
Tropicos resource Genus
Wikimedia Commons Genus
Wikipedia Genus
iNaturalist Images Genus
xeno-canto Bird Sounds Genus


EOL content is automatically assembled from many different content providers. As a result, from time to time you may find pages on EOL that are confusing.

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