Hellmayr's Pipit
Anthus hellmayri
Uncommon pipit found in grasslands, dry rocky areas, and less frequently in low intensity agricultural habitats. It has a heavily streaked back with a white throat and pale belly. Note the lightly streaked breast and flanks. Similar to Short-billed Pipit, but lacks the white mustache and has streaky flanks. Sings a series of buzzy nasal notes perched or in flight.
识别特征
Hellmayr's pipit is a medium-sized brown bird weighing 18.6g. It has pink legs and a light pink bill. Its back is boldly streaked and its breast and flanks are only faintly streaked. It can be confused with the similar-looking Short-billed pipit but its throat is white instead of streaked and it lacks the white submoustachial stripe. Eggs are oval in shape and white with brown speckles.
分类信息
Hellmayr's pipit was described by Ernst Hartert in 1909 who placed it in the genus Anthus. The bird is named after Austrian ornithologist, Carl Eduard Hellmayr. There are currently three recognized species:
- 学名
- Anthus hellmayri
- 命名信息
- Hartert, EJO, 1909
- 目
- Passeriformes
- 科
- Motacillidae
- 属
- Anthus
分布与栖息地
Hellmayr's pipit is found in three disjunct populations across the southern half of South America. It is found in the Andes from southern Peru, through Bolivia into northwestern Argentina, as well as in the Andes of southern Argentina and Chila. The eastern population (A. h. brasilianus) ranges from Espinhaço Range in the Brazilian states of Minas Gerais and Bahia, south down into Uruguay and eastern Argentina, and west into the chaco of Paraguay. It occurs from sea level to 3,700 meters.
- 迁徙
- Complete migrants
行为
It is year round in most of its range, with its breeding season being in the rainy season from September to April. Males are known to perform aerial displays for females during breeding season. The population in Chile and southern Argentina (A. h. dabbenei) is known to be migratory. They are mainly insectivores. Nests are cup-shaped with a grass dome built over top of it being roofed with dry stems. Nests are built on the ground in grass mounds. They have a maximum clutch size of five eggs. Both parents participate in the feeding of the fledglings.
保护状况
- 种群趋势
- stable
照片
分布
鸟叫声
其他鸟类
Yellow-legged Brushturkey
Talegalla fuscirostris
A large, black ground bird of lowland rainforest. Bare gray facial skin, black bill and bright yellow legs. It is very shy and forages on the forest floor for fallen fruit, invertebrates and even small lizards. Sleeps up in the trees. Co-occurs with other similar-sized black birds, but bright yellow legs are unmistakable. More often heard than seen. Call a raucous “rawk! rak-rak-rak-rak!” with a longer, lower first note and the subsequent ones repeated.
Crissal Thrasher
Toxostoma crissale
Dark grayish thrasher with distinctive rufous undertail coverts. Bill long and strongly curved. Tail long and dark. Obvious dark line separating white mustache and white throat. Yellow eye. Secretive and uncommon, although perches conspicuously when singing. Found in brushy deserts. With a good view, easily distinguished from more common Curve-billed Thrasher by darker gray color and rufous undertail coverts. Listen for jumbled, rambling song.
Great Skua
Stercorarius skua
Powerful dark brown seabird, resembles a dark, heavily built immature gull. Note eye-catching white flashes in the primaries when in flight. Adults have distinct pale mottling on the upperparts, which serves to separate them from adults of the very similar South Polar Skua. Juveniles are more uniformly colored, with warm-colored and largely unmarked underparts; note bulkier build and more powerful flight than Pomarine Jaeger. Breeds locally on moorland of islands and coasts in northern Europe, where aggressive near nests. Otherwise lives at sea, but may be seen from shore during windy conditions during migration periods. Feeds by pirating gulls and other seabirds, also by scavenging at fishing boats.
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