Bahama Yellowthroat
Bahama Yellowthroat ( Geothlypis rostrata )
The Bahama Yellowthroat ( Geothlypis rostrata ) is a small passerine bird in the family of warblers ( Parulidae ).
Features
Bahama Yellowthroat reach a body length of 15 centimeters and weigh 15.1 to 17.3 grams. The wing length is 6 to 6.7 inches in the male, the female, 5.7 to 6.3 centimeters. Adult male Bahama Yellowthroat the nominate have a black face mask that is connected via the beak, attached gray white forehead crown band that runs up to the ear covers and a gray crown plumage. The neck is olive gray; the sides of the neck and the top feathers are olive green. The wings are dull brown with olive feather edges and the bottom yellow plumage, which is slightly matte on the abdomen and sometimes can also be white. On the flanks of the plumage is washed out olive. The beak is black; the legs flesh-colored. With a length of 1.5 to 1.7 centimeters, they have the largest and heaviest beak in the genus Geothlypis.
In the adult female Bahama Yellowthroat the black face mask and forehead crown band is missing. Crown and nape are gray to olive-gray; the sides of the head slightly matt olive gray colored, especially on the reins. Under the eye borders, a narrow white stripe. The top plumage is something oliver and fuselage and tail feathers light olive. Throat and breast feathers are dull yellow, the flanks washed olive and the belly and under tail-coverts whitish. Female specimens of the species have a similar appearance. Male individuals of the subspecies Geothlypis r. coryi usually have a yellow-white forehead crown band; Males of the subspecies Geothlypis r. tanneri a tinted, yellow forehead crown band.
Resources, nutrition and reproduction
Bahama Yellowthroat are endemic to the Bahamas. They live singly or in pairs dense undergrowth and shrubs in arid regions and farnbewachsene areas. Their diet consists mainly of insects and other invertebrates. Your cup-shaped nest they lay well hidden in the dense vegetation on the ground or in a tree stump. The clutch consists of two eggs. More detailed studies of breeding behavior are not known.
Subspecies and distribution
Together with the willow Yellowthroat ( Geothlypis trichas ), the Belding Yellowthroat ( Geothlypis beldingi ) and the gold crown Yellowthroat ( Geothlypis flavovelata ) forms the Bahama Yellowthroat a super species.
There are three recognized subspecies:
- Geothlypis r. rostrata H. Bryant, 1867 - Andros and New Providence
- Geothlypis r. coryi Ridgway, 1886 - Eleuthera and Cat Iceland
- Geothlypis r. tanneri Ridgway, 1886 - Grand Bahama, Great Abaco ( Abaco ) and the associated coastal islets
Threat status
In Andros and New Providence is the nominate Geothlypis r. rostrata rarely seen. Current trends do not exist. They are currently considered by the Birds BirdLife International as not threatened. From the IUCN are classified as " not at risk " out (Least Concern ).