Coppery-headed Emerald

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Coppery-headed Emerald
Conservation status
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Aves
Order: Trochiliformes
Family: Trochilidae
Genus: Elvira
Species: E. cupreiceps
Binomial name
Elvira cupreiceps
(Lawrence, 1867)

The Coppery-headed Emerald (Elvira cupreiceps) is a small hummingbird endemic to Costa Rica. It measures a mere 3 in (7.6 cm) in length, and weighs only 3 g (0.11 oz).[2] The male has distinctive coppery crown and rump with a whole green belly and white vent. The female has a white belly and a narrow black subterminal band on white outer rectrices of the tail. Its noticeably decurved bill sets it apart from similar the allopatric White-tailed Emerald.

This species is fairly common at middle elevations on Caribbean Slope, south to Reventazon River; from 600 to 1,500 meters. Also it is fairly common on Pacific slope of Guanacaste and Tilaran Cordilleras; from 1,200 to 1,500 meters.

Like all hummingbirds, the Coppery-headed Emerald feeds primarily on nectar. Because its bill is short, it forages at small flowers, including those in the genera Besleria, Cavendishia, Clusia, Guarea, Pithecellobium, Quararibea and Satyria.[2] It feeds at all levels in mature wet montane forest and forest edges.

Males form small leks at middle levels of forest edges.

A perched male


[edit] References

  1. ^ BirdLife International (2009). Elvira cupreiceps. In: IUCN 2008. IUCN Red List of Threatened Species. Downloaded on 15 February 2012.
  2. ^ a b Henderson, Carrol L.; Adams, Steve (2002). Birds of Costa Rica: A Field Guide. Austin, TX: University of Texas Press. p. 160. ISBN 978-0-292-71965-1. http://books.google.com/books?id=TxpqRO8dB8AC&pg=PA160&dq=coppery-headed+emerald&hl=en&sa=X&ei=xCg7T8DEEset0AGuwrjRCw&ved=0CDAQ6AEwAA#v=onepage&q=coppery-headed%20emerald&f=false. 

The Birds of Costa Rica by Richard Garriguez and Robert Dean. Zona Tropical ISBN 10:0-9705678-5-5

[edit] External links

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