Crimson Warbler
| Crimson Warbler | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Crimson Warbler ( Cardellina ruber ) |
||||||||||||
| Systematics | ||||||||||||
|
||||||||||||
| Scientific name | ||||||||||||
| Cardellina ruber | ||||||||||||
| ( Swainson , 1827) |
The crimson warbler ( Cardellina ruber , Syn .: Ergaticus ruber ) is a small songbird from the family of the forest warbler (Parulidae).
features
Crimson Warbler reach a body length of thirteen centimeters and a weight of 7.6 to 8.7 grams. The wing length is 5.7 to 6.5 centimeters in the male and 5.6 to 6.3 centimeters in the female. Adult crimson warblers of the nominate form have a light red to red head, upper and lower side plumage and white to silver-white ear covers, often bordered with black. The wings and tail feathers are brown with dull red feather edges. The subspecies Cardellina r. melanauris has silver-gray ear covers ; the subspecies Cardellina r. rowleyi as with the nominate form white to silvery white. Juvenile specimens of the nominate form have yellow-brown to brown plumage with dull red feather edges on the brown wings and the brown tail feathers. The ear covers are silver colored.
Occurrence, nutrition and reproduction
The distribution area is limited to Mexico . The birds live in pairs of mixed pine-oak forests with dense undergrowth at altitudes of 2000 to 3500 meters. Their breeding areas are usually at altitudes above 2800 meters. Over the winter they move to lower regions up to heights of 2000 to 2400 meters. They mainly feed on insects , which they find mainly in the thick undergrowth. They make their nest well hidden on the ground. The breeding season usually lasts from February to May. There are no precise studies of the breeding behavior; it may be similar to that of the closely related rose warbler ( Cardellina versicolor ).
Subspecies
There are three recognized subspecies:
- Cardellina r. ruber (Swainson, 1827) - central and western Mexico to the south to Oaxaca and central Veracruz
- Cardellina r. melanauris R. T. Moore, 1937 - Mexico ( Sinaloa , Durango and in the south of Chihuahua )
- Cardellina r. rowleyi Orr & JD Webster, 1968 - Mexico (In Guerrero and south of Oaxaca)
They are listed as “Least Concern” by the IUCN .
swell
literature
- Jon Curson, David Quinn, David Beadle: New World Warblers. Helm, London 1994, ISBN 0-7136-3932-6 .
Web links
- Cardellina rubra in the endangered Red List species the IUCN 2008. Posted by: BirdLife International, 2008. Accessed January 25 of 2009.