American Tree Sparrow
Spizelloides arborea
Hardy northern sparrow with plump body, small bill and long, thin tail. Note rusty cap and rusty (not black) eyeline, gray head and unstreaked grayish breast with dark smudge in center. Small flocks hop on ground, foraging for seeds, giving a soft, musical twitter. In winter, look for them in weedy fields with shrubs, forest edges, and marshes. Readily visit backyards. Rarely seen south of northern Canada in summer.
识别特征
Measurements:<p>Adults have a rusty cap and grey underparts with a small dark spot on the breast. They have a rusty back with lighter stripes, brown wings with white bars and a slim tail. Their face is grey with a rusty line through the eye. Their flanks are splashed with light brown. They are similar in appearance to the chipping sparrow.
分类信息
It had been classified under the genus Spizella, but multilocus molecular evidence suggested placement in its own genus.
- 学名
- Spizelloides arborea
- 命名信息
- (Wilson, A, 1810)
- 目
- Passeriformes
- 科
- Passerellidae
- 属
- Spizelloides
分布与栖息地
Their breeding habitat is tundra or the northern limits of the boreal forest in Alaska and northern Canada. They nest on the ground. American tree sparrows migrate into southern Canada and the United States to spend the winter.
- 繁殖区
- NA : n Canada and Alaska
- 非繁殖区
- USA
- 迁徙
- Complete migrants
保护状况
- 种群趋势
- declining
照片
分布
鸟叫声
其他鸟类
Henderson Petrel
Pterodroma atrata
A typical uniformly grayish-brown petrel with pale mottling at the base of the bill that gives it a somewhat “frosted” facial appearance. Pale bar along the leading edge of the underwing between the body and elbow is evident in flight. Highly pelagic, visiting land only to nest. Similar to Kermadec Petrel, but lacks the white primary shafts in the upperwing of that species and is overall more uniformly colored. Providence Petrel is similar but appears much heavier-chested and paler-faced, with more extensively mottled gray-brown tones across the body. Herald Petrel is very similar, but has much more contrasting dark-and-light underwing pattern. Henderson Petrel is silent at sea.
White-cheeked Pintail
Anas bahamensis
Very distinctive duck with its white cheeks, throat, and tail contrasting with its brown body. The bill is dark with red sides at the base. In flight shows pale brown and green patches on the wings. Both sexes similar. Found in both fresh and saline wetlands.
Plain-breasted Piculet
Picumnus castelnau
Relatively plain piculet found in dense riverine and secondary vegetation along the Amazon and its tributaries in Peru, barely making it into southernmost Colombia and westernmost Brazil. Plumage generally pale below with a brownish back. Note the dark spots in the ear coverts; the short, sharp bill; and the glossy red feathers in the male’s crown. Song is a very high-pitched series of thin whistles, dropping at the end.
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