Brown tree frog
- This article is about the Australian species. For the Asian brown tree frog, see Polypedates megacephalus.
The brown tree frog or whistling tree frog, Litoria ewingii, is a species of tree frog native to most of southern Victoria, eastern South Australia, southern New South Wales — from about Ulladulla, though this species is reported to occur further north — throughout Tasmania, including Bass Strait Islands, where it is the most frequently encountered frog in that state. It has been introduced to New Zealand, where it can be locally abundant.
This species reaches 45 mm in length. It is pale to dark brown on the dorsal surface, with a broad darker patch starting at the eyes and covering the majority of the back. A dark band starting at the nostril runs across the eye and tympanum to the shoulder, and a pale white stripe below this runs from the mouth to the arm. The backs of the thighs are red, and no black marbling is present (except specimens from the Adelaide region), distinguishing this species from the similar whistling tree frog, (Litoria verreauxii). Some specimens from western Victoria and south eastern South Australia can be partially or entirely green. The belly is cream.
Ecology and behaviour
This species is found in a wide range of habitats,including forests, farmland, heathland, semiarid areas, alpine regions, and suburban areas. They are particularly common in parts of suburban Adelaide, Melbourne, and Hobart, where they are often observed upon window panes at night, attracted by flying insects. Males make a whistling weep-weep-weep call from beside or floating in the water of, dam impoundments, ditches, ponds, and stream-side pools. Males call all year round, particularly after rain. Eggs are easily identifiable, being wound around submerged grass stems, aquatic vegetation, and sticks. These frogs can freeze and survive.
As a pet
In Australia, this animal may be kept in captivity with the appropriate permit.
- New Zealand Frog Research Group
- Kalinka M. J. Rexer-Huber, Phillip J. Bishop and David A. Wharton; (2011) Skin ice nucleators and glycerol in the freezing-tolerant frog Litoria ewingii. Journal of Comparative Physiology B: Biochemical, Systemic, and Environmental Physiology 4 March 2011
|Wikispecies has information related to: Litoria ewingii|
- "Introduced Frogs". NZFROG. New Zealand Frog Research Group. Retrieved 4 December 2009.
- Anstis, Marion (2002). Tadpoles of South-eastern Australia. Sydney: Reed New Holland. p. 272. ISBN 978-1-877069-49-9.
- Robinson, M. 2002. A Field Guide to Frogs of Australia. Australian Museum/Reed New Holland: Sydney.
- Frogs Australia Network-frog call available here.
- Frogs of Australia
- Article Road: List of All Frog Breeds: Things You Can Do to Ensure Your Frog Has a Long, Happy and Healthy Life: Brown Tree Frog
- Department of Environment, Climate Change and Water, New South Wales: Amphibian Keeper's Licence: Species Lists
- All About Frogs: Species Caresheets : Information on Specific Breeds of Frogs and Toads
- All About Frogs: Brown Tree Frog
- All About Frogs: Detailed housing for the whistling tree frog (Litora Ewingii)
- Call of Ewings brown tree frog