Ergaticus

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Ergaticus

Kingdom:	Animalia
Phylum:	Chordata
Class:	Aves
Order:	Passeriformes
Family:	Parulidae
Genus:	Ergaticus Baird, 1865

Species

E. ruber
E. versicolor

Ergaticus is a genus of New World warblers endemic to Mexico and Guatemala.

The species are:

Red Warbler, E. ruber
Pink-headed Warbler, E. versicolor

They live in forests at altitudes of 1800 to 3500 m, the Red Warbler to the west of the Isthmus of Tehuantepec and the Pink-headed Warbler to the east (Howell and Webb 1995).

Both are average-sized for warblers (12.7 to 13.5 cm or 5 to 5.3 in long). Adult plumage is largely red and pink; juvenile plumage is largely "pinkish cinnamon-brown" (Howell and Webb 1995). The bill is small and narrow at the base even for a New World warbler. The tail is rounded and relatively long (Ridgway 1902). The songs consist of high-pitched chips and short trills (Howell and Webb 1995).

They occur singly or in pairs and may join mixed-species feeding flocks (Howell and Webb 1995).

The nest is shaped like an old-fashioned oven with an opening to the top or side, made of pine needles, grass, or similar materials. It is placed on the ground or on a bank. Both can lay 3 or 4 eggs; the Pink-headed Warbler sometimes lays only 2. The eggs are off-white with reddish-brown and gray speckles (Howell and Webb 1995).

The name is from Ancient Greek ergatikos, "willing or able to work" (Jaeger 1978).

[edit] References

Jaeger, Edmund C (1978). A Source-Book of Biological Names and Terms. Charles C. Thomas, 95. ISBN 0-398-00916-3. Retrieved on 2007-08-18.
Howell, Steve N. G.; Webb, Sophie (1995). A Guide to the Birds of Mexico and Northern Central America. Oxford University Press, 654–655. ISBN 0-19-854012-4.
Ridgway, Robert (1902). "The Birds of North and Middle America. Part II". The Bulletin of the National Museum of the United States 50: 758.
Peterson, Alan P. (Editor). 1999. Zoological Nomenclature Resource (Zoonomen). Accessed 2007-08-18.