Boreal Chickadee

Poecile hudsonicus

Restricted to coniferous forests in the far northern U.S. and Canada. Similar in size and shape to other chickadees, but with unique color pattern: brown cap, black throat, and rich orange-buff flanks. Typically fairly shy; can be difficult to get a good view as it sneaks through the dense spruces. Voice sounds like a wheezy Black-capped Chickadee; slower with more slurred notes.

识别特征

Adults are 12.5–14.5 cm (4.9–5.7 in) long with a weight of 7–12.4 g (0.25–0.44 oz). They have grey-brown upperparts with a brown cap and greyish wings and tail; their face is mainly grey with white on the sides. Their underparts are white with brown on the flanks and a black throat. They have a short dark bill, short wings and a long notched tail. Their flight consists of brief gliding patterns followed by fast and bouncy wing beats as they travel through the air.

分类信息

The species was formerly placed in the genus Parus with most other tits, but mtDNA cytochrome b sequence data and morphology suggest that separating Poecile more adequately expresses these birds' relationships. Molecular phylogenetic studies have shown that the boreal chickadee is sister to the chestnut-backed chickadee (Poecile rufescens).

学名
Poecile hudsonicus
命名信息
(Forster, JR, 1772)
Passeriformes
Paridae
Poecile

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

Gunnison Sage-Grouse

Gunnison Sage-Grouse

Centrocercus minimus

Large turkeylike bird found in extensive areas of sagebrush. Both sexes gray overall with very fine patterning, black belly, and long pointed tail. Males have a white breast and a black throat. Spectacular male display involves fanning tail, inflating yellow air sacs on chest, and thrusting them forward to produce liquidy popping noises. Extremely similar to more widespread Greater Sage-Grouse but smaller and no range overlap. Also note lighter tail and longer head plumes on Gunnison when displaying. Most easily seen at display sites in early spring; can be very inconspicuous at other times of year. Tends to forage in wet riparian areas near sagebrush. Population in decline.

Booted Eagle

Booted Eagle

Hieraaetus pennatus

A medium-sized buzzard-like raptor but still unmistakably eagle-shaped, with long fingered primary flight feathers, a long square-shaped tail, and feathered legs (boots) prominent when perched. Two color morphs: pale morphs are distinctively two-toned and contrasting, whereas dark birds can be confused with Black Kites and Marsh Harriers. Look for distinctive pale "landing lights" on the shoulders when viewed head-on. Found in forested country with open patches, often in hilly areas where it frequently soars with wings slightly pushed forward.

Ochre-breasted Tanager

Ochre-breasted Tanager

Chlorothraupis stolzmanni

A plain, chunky bird with a “big mouth.” Found in foothill rainforest of western Ecuador and western Colombia. It’s mostly olive-brown with pale eyes and a stout bill. Forages at middle levels of the forest and may join mixed-species flocks. Sings incessantly early in the morning, giving loud whistles intermixed with scratchy twitters and squeaks. It can open its beak surprisingly wide while singing, giving the impression that it’s shouting.

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