Yellow-backed Tanager

Hemithraupis flavicollis

Small warblerlike tanager. Male is distinctive: mostly black above with yellow patch on back, yellow throat and undertail coverts, and dingy whitish belly. Female is less striking: overall yellowish with grayer flanks, yellow edging on wing feathers, and orange lower bill (sometimes dull). Widespread from eastern Panama to southeast Brazil. Typically seen in pairs foraging in the canopy of lowland forest, often following a mixed-species flock.

识别特征

The yellow-backed tanager is a relatively small tanager. It has a body mass of 12.9 g and a tail length of around 5 cm with the females having a slightly shorter tail. Like many tanagers, the yellow-backed tanager is sexually dimorphic, with vibrantly coloured males and duller females. While the males of different subspecies vary, most have a black head, neck, wings and tail; a bright yellow throat, vent, and back, and a white breast, belly, and undertail coverts. Females of all subspecies are bright yellow on the throat, rump, median coverts and breast, with an olive crown, neck, back, belly, and tail. Both sexes have silvery-grey legs and a bill with a dark upper mandible and a yellowish-orange lower mandible, which is more boldly coloured on the males. It makes many different calls and songs, consisting mostly of high-pitched chirps and trills, as well as a buzzing call that the male makes while attempting to initiate copulation.

分类信息

The yellow-backed tanager was described in 1818 by Louis Pierre Vieillot who place it in the genus Nemosia. It was later placed in its current genus, Hemithraupis. There are currently 11 recognized subspecies.

学名
Hemithraupis flavicollis
命名信息
(Vieillot, 1818)
Passeriformes
Thraupidae
Hemithraupis

分布与栖息地

迁徙
Resident species

保护状况

种群趋势
declining

照片

分布

鸟叫声

其他鸟类

Glistening-green Tanager

Glistening-green Tanager

Chlorochrysa phoenicotis

Brilliantly-colored tanager of Andean cloud forest in western Ecuador and western Colombia. Male is bright emerald-green with small red and white spots on sides of head. Female and immature are slightly duller and may lack head spots. Usually found in small groups that forage energetically in lower to middle levels of the forest, and often joins mixed-species flocks. Visits feeders in some areas.

White Hawk

White Hawk

Pseudastur albicollis

Spectacular, broad-winged, short-tailed hawk of lowland tropical forest. Usually seen soaring in mid-late morning or perched quietly in the forest canopy. Basically unmistakable, but beware of rare albino forms of other hawks. Plumage is white overall with black wingtips and a black tail band. Immature has more black on wings, as do adults of populations in southern Central America. Note dark eyes and pale grayish base to the bill (versus yellow on most hawks).

Tomtit

Tomtit

Petroica macrocephala

Small forest bird with distinct large head and short tail, endemic to New Zealand. The five subspecies are restricted to North, South, Snares, Auckland, and Chatham Islands, respectively. Plumage is variable depending on sex and location. Males are generally black and white, females brown and white. Both sexes have a white spot at the base of the bill, which is raised as a threat display. Favors mature native forests, but also uses scrub and exotic forest stands. Feeds in understory of forest but will come out in the open. Perches on trunks and branches before swooping down to take insect prey. Listen for musical male song “ti-oly-oly-oly-ho,” often likened to a squeaky gate being opened and shut.

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