Nelson's Sparrow
Ammospiza nelsoni
This bright sparrow has multiple disjunct populations; inland breeders are generally brighter than coastal breeders. Atlantic birds have a duller buffy face and breast with blurry gray streaking; Interior birds are brighter orange with crisper black streaking. Similar to Saltmarsh Sparrow but shows less contrast between the face, throat, and breast and has a shorter blue-gray bill. Inland birds can be confused with LeConte's Sparrow but note clean gray nape and gray, not white, stripe in crown. Conspicuous when singing, otherwise secretive. Its song is a simple hiss like water sizzling in a frying pan. Winters in coastal marshes along most of Atlantic seaboard and Gulf Coast.
识别特征
Measurements:<p>Adults have brownish upperparts with gray on the crown and nape, a cream-colored breast with light or indistinct streaking and a white throat and belly; they have an orange face with gray cheeks and a short pointed tail.
分类信息
This bird was named after Edward William Nelson, an American naturalist. Formerly, this bird and the saltmarsh sparrow (Ammospiza caudacuta) were considered to be a single species, the sharp-tailed sparrow; because of this it was briefly known as Nelson's sharp-tailed sparrow.
- 学名
- Ammospiza nelsoni
- 命名信息
- (Allen, JA, 1875)
- 目
- Passeriformes
- 科
- Passerellidae
- 属
- Ammospiza
分布与栖息地
Their breeding habitat is marshes on the Atlantic coast of Canada and Maine, central Canada, (the Canadian Prairies region and a coastal strip on the south of Hudson Bay), and the north-central United States.
- 繁殖区
- NA : Canada and n USA
- 非繁殖区
- se USA
- 迁徙
- Complete migrants
行为
These birds migrate to the southeastern coast of the United States. They forage on the ground or in marsh vegetation, sometimes probing in mud and eat mainly insects, aquatic invertebrates and seeds. Their call is a raspy trill, almost a mechanical sound. It may be given in flight during the nesting season. The sound has been likened to a drop of water hitting a hot fry pan.
保护状况
- 种群趋势
- rising
照片
分布
鸟叫声
其他鸟类
Rufous Hornbill
Buceros hydrocorax
A large hornbill of lowland and foothill forest. Body dark, with rufous thighs, chest, and neck, a whitish tail, a red casque, a long red bill, and a black face bordered behind with yellow. Females have a smaller casque, a paler eye, and no eye-ring. Southern birds have a yellow-tipped bill. Similar to the Writhed Hornbill, but Rufous lacks the black tip to the tail and has a rufous rather than black or pale head. Voice includes loud, downslurred nasal honking notes.
Sunda Coucal
Centropus nigrorufus
Uncommon and localized Javan endemic, restricted to coastal marshes, mangroves, estuaries, and adjacent scrubby and grassy growth. Black overall, with bright red eyes and patchy rufous-and-black wings. Also note huge, heavy bill with a hooked tip. Not as vocal as other coucals; infrequently gives a monotonous series of hoots which averages faster than that of Greater Coucal. Forages on the ground and in dense vegetation, only occasionally emerging into the open.
Ruddy Treerunner
Margarornis rubiginosus
This small forest bird is bright rufous overall with an obvious white throat and eyebrow. Similar to various spinetails and foliage-gleaners, but it’s the only small rufous-brown bird in its range with such a prominent head pattern. Usually seen singly or in pairs, often following a mixed-species flock. Found in montane forests and edges from 1200m up to treeline. Hitches up mossy branches, probing around for invertebrates.
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