Chaco Sparrow
Rhynchospiza strigiceps
Small sparrow found in lowlands and foothills from northern Argentina to southeastern Bolivia. It has chestnut and gray stripes on the head and faint black and white mustache streaks. Similar to Yungas Sparrow, with which it was formerly lumped as Stripe-capped Sparrow, but is smaller with less black between the eye and bill, browner wings, and different voice. Inhabits open, grassy habitats with scattered trees and low scrub. Song is a fairly rapid series of sweet whistles, repeated every few seconds.
识别特征
The Chaco sparrow is the smaller of the two former subspecies that were split. Its upper parts are light brown with darker streaks and varying amounts of rust and gray. It is pale gray below blending to buff on the flanks. The head is gray with cinnamon crown and postocular stripes, pale lores, and a black moustachial stripe.
分类信息
The current Chaco sparrow was originally one of two subspecies of the then stripe-capped sparrow (Aimophila strigiceps). A 2009 publication restored the genus Rhynchospiza and moved A. stolzmanii and A. strigiceps to that genus. A 2019 publication split Rhynchospiza dabbenei from R. strigiceps. Based on the 2019 publication, in June 2020 the South American Classification Committee (SACC) of the American Ornithological Society (AOS) split R. dabbenei as the Yungas sparrow and renamed R. strigiceps sensu stricto as the Chaco sparrow. The International Ornithological Congress (IOC) followed suit in January 2021.
- 学名
- Rhynchospiza strigiceps
- 命名信息
- (Gould, 1839)
- 目
- Passeriformes
- 科
- Passerellidae
- 属
- Rhynchospiza
分布与栖息地
The Chaco sparrow is a partial migrant found in the Gran Chaco region from south-central Paraguay into north-central Argentina. This low elevation biome (up to 1,000 m (3,300 ft)) is characterized by subtropical and tropical dry forests and shrubland.
- 迁徙
- Vertical migration
保护状况
- 种群趋势
- stable
照片
鸟叫声
其他鸟类
Red-crested Cardinal
Paroaria coronata
Unmistakable with its bright red crest and throat that contrasts with its gray back and white underparts. Note the pale horn-colored bill. Usually seen on the ground in semiopen habitat including agricultural lands and urban areas. In the nonbreeding season gathers in large flocks. The songs is a slow melodious whistle.
Boat-tailed Grackle
Quiscalus major
Large, lanky blackbird with rounded crown and long tail. Males have ridiculously long tails, almost as long as their body, often held in a V-shape like the keel of boat. Males are glossy black. Females are brown, with subtle face pattern. Eye color ranges from brown along western Gulf Coast to yellow on Atlantic Coast. Strictly coastal, except in Florida where they occur inland (often around human development). Overlaps with similar Great-tailed Grackle on Texas coast, but occurs more strictly in coastal saltmarshes and has dark eye (not pale).
Cayenne Jay
Cyanocorax cayanus
Large jay of humid forest and edges including savanna and premontane forest in the tepui region. Combination of size and black-and-white plumage unlike any other species in range. Moves through forest in noisy groups but can be hard to see well. Sometimes accompanies foraging flocks of oropendolas and caciques, feeding on flowers and fruit. Calls include a variety of whistles and grunts.
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