Gold-crowned emerald hummingbird
| Gold-crowned emerald hummingbird | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
Gold-crowned emerald hummingbird |
||||||||||
| Systematics | ||||||||||
|
||||||||||
| Scientific name | ||||||||||
| Chlorostilbon auriceps | ||||||||||
| ( Gould , 1852) |
The gold- crowned emerald hummingbird ( Chlorostilbon auriceps ) is a species of bird in the hummingbird family (Trochilidae) that is endemic to Mexico . It occurs from the south of Sinaloa via Durango to Guerrero and Oaxaca . The IUCN assesses the population as Least Concern . The species is considered to be monotypical .
features
The gold-crowned emerald hummingbird reaches a body length of about 7.5 to 9.5 cm and weighs 2.2 g. The male has a long, deeply forked tail. The head and body are emerald green with more glitter on the top and bottom. The tail is blue-black and has gray tips on the inner control feathers . The female is smaller with a forked tail. The whitish eye stripe stands out clearly from the green of the top of the head and the blackish ear covers. The neck and underside are golden green. The inner tail feathers are also golden green, but the outer ones are blackish. The two outermost pairs also have white tips and are white at the base of the outer flags. Male juveniles look similar to females, but have a longer blue-black tail. The inner three control springs with pale gray tips appear washed out green. The outermost have pale to dull gray tips. The underside is partly green and occasionally forms a collar tab. Females and juveniles resemble the blue-throated broad-billed hummingbird or the blue-faced broad-billed hummingbird , but are smaller and the tail is more forked. In addition, the blue is missing on the throat.
Behavior and nutrition
The gold-crowned emerald hummingbird draws its nectar a . a. of convertible roses . Otherwise there is no known difference to the diet of the blue-tailed emerald hummingbird .
Reproduction
The breeding season of the golden-crowned emerald hummingbird is from February to July. A clutch consists of two white eggs. It is believed that it resembles the blue-tailed emerald hummingbird in breeding behavior.
Vocalizations
The song of the gold-headed emerald hummingbird consists of dry rattling and cackling tones. This sounds a bit harder than the blue-throated broad-billed hummingbird.
distribution and habitat
The gold-headed emerald hummingbird prefers forests and scrub, in overgrown clearings, as well as forest edges, mostly in dry to semi-arid areas. Here it moves at altitudes from sea level to 1800 meters.
migration
The gold-crowned emerald hummingbird is a resident bird .
Etymology and history of research
The first description of the gold crown emerald hummingbirds carried out in 1852 by John Gould under the scientific name Trochilus (----?) Auriceps . The type specimens came from Mexico and were made available by Damiano Floresi d'Arcais . In 1853 John Gould introduced the new genus Chlorostilbon . "Chlorostilbon" is made up of the Greek words "chlōros χλωρός " for "green" and "stilbōn στίλβων " for "shining". The Greeks gave Mercury the nickname Stilbōn , which is due to the verb "stilb" for "blink". The species name "auriceps" is a Latin word formation from "aurum" for "gold" and "-ceps, caput, capitis" for "-krönt, head".
literature
- Josep del Hoyo , Nigel James Collar , Guy Maxwell Kirwan in: Josep del Hoyo, Andrew Elliott, Jordi Sargatal , David Andrew Christie, Eduardo de Juana: Golden-crowned Emerald (Chlorostilbon auriceps) In: Handbook of the Birds of the World Alive . Lynx Edicions, Barcelona.
- James A. Jobling: Helm Dictionary of Scientific Bird Names . Christopher Helm, London 2010, ISBN 978-1-4081-2501-4 .
- John Gould in William Jardine, 7th Baronet of Applegarth: Description of three new species of Humming-Birds . In: Contributions to Ornithology for 1851 . tape 5 . WH Lizard, Edinburgh 1852, p. 135-137 ( biodiversitylibrary.org ).
- John Gould: A monograph of the Trochilidæ, or family of humming-birds . tape 5 , delivery 5. Taylor and Francis, London 1853 ( biodiversitylibrary.org ).
- Frederick Herschel Waterhouse: The dates of publication of some of the zoological works of the late John Gould, FRS RH Porter, London 1885 ( biodiversitylibrary.org ).
Web links
- Chlorostilbon auriceps in the Red List of Endangered Species of the IUCN 2019.2. Listed by: BirdLife International, 2016. Retrieved July 29, 2019.
- BirdLife International: Species Factsheet - Golden-crowned Emerald ( Chlorostilbon auriceps ) . Retrieved July 29, 2019.
- Videos, photos and sound recordings of Golden-crowned Emerald (Chlorostilbon auriceps) in the Internet Bird Collection
- Gold- crowned emerald hummingbird ( Chlorostilbon auriceps ) at Avibase; accessed on July 29, 2019.
- Chlorostilbon auriceps in the Integrated Taxonomic Information System (ITIS). Retrieved July 29, 2019.
- xeno-canto: sound recordings - gold- crowned emerald hummingbird ( Chlorostilbon auriceps )
- Golden-crowned Emerald (Chlorostilbon auriceps) in the Encyclopedia of Life . Retrieved July 29, 2019.