Cattle Tyrant
Machetornis rixosa
Medium sized flycatcher with fairly widespread range in South America. Superficially resembles a Tropical Kingbird with olive-brown back, yellow belly, and grayish crown. However, Cattle Tyrant is unique for typically being found on or near the ground, where pairs or small flocks follow grazing animals. Found in open habitats including farmland and marshes.
识别特征
The cattle tyrant is a highly terrestrial tyrant-flycatcher, 20 cm (7.9 in) long and weighing 29–40 g (1.0–1.4 oz). The plumage of the nominate subspecies is mostly olive-brown above and yellow below. The head is grey with a thin eyestripe and a white throat. The thin bill and legs are black. The two other subspecies vary from the nominate in having a yellow throat.
分类信息
- 学名
- Machetornis rixosa
- 命名信息
- (Vieillot, 1819)
- 目
- Passeriformes
- 科
- Tyrannidae
- 属
- Machetornis
分布与栖息地
The species has a disjunct distribution, with the nominate race breeding from northern Argentina and Bolivia to the north-eastern tip of Brazil, and the two other subspecies ranging from Panama to Venezuela and eastern Ecuador. The species inhabits drier open and semi-open habitats, and avoided forested and wooded areas. It can be found in savannah, pastureland, parkland, agricultural land and even gardens. Due to deforestation, the species has recently colonized areas where it was previously absent, such as northeast Ecuador.
- 迁徙
- Resident species
行为
Cattle tyrants feed on insects, mostly from the ground. It may follow cattle or other large animals for some distance, catching flushed prey, or even hitch rides on these animals, and then snatching flushed prey with a quick sally-flight. It may sometimes hawk for insects from a high perch. The species is sometimes reported to have a cleaning symbiosis with the large mammals it lives with. It takes ticks off mammals only occasionally, but it will sometimes hunt horseflies attempting to land on capybaras.<p>Cattle tyrants build bulky nests or steal the nests of rufous-fronted thornbirds. 3 to 4 eggs are laid and incubated for 14 days. The chicks fledge after 15 days.
保护状况
- 种群趋势
- stable
照片
分布
鸟叫声
其他鸟类
Grande Comore Drongo
Dicrurus fuscipennis
Bold, glossy-black fork-tailed bird with a red eye. A rare endangered species that is confined to the island of Grand Comoro. Found locally at lower elevations in plantations, secondary forest, and scrub. Perches prominently on open perches, swooping out to catch insects on the wing. Song is a repeated sequence of whistles, creaks, and rasps. Somewhat similar to Grand Comoro Bulbul, but darker, with a forked tail, and without an orange bill.
Orchard Oriole
Icterus spurius
Small, slender oriole. Adult males are a unique rich chestnut-brown color with a black head. Females are dull yellow-green with white wingbars. Immature males are similar to females, but with a black throat and mask. Breeds in open woodlands, river edges, pastures with scattered trees, and brushy orchards. Visits feeders with nectar and fruits. Departs breeding grounds early and heads to wintering grounds in Mexico and Central America, where it can be found in any open or wooded habitat. Compare with female Hooded Oriole, which is larger and longer-tailed and has a narrower, more curved bill.
Cream-colored Woodpecker
Celeus flavus
Distinctive yellow woodpecker of lowland Amazonia. Bright creamy yellow overall with short creamy crest, brown wings and tail, and yellow bill; male has red moustache Usually found in seasonally flooded and swampy forested areas, but can be found outside those habitats occasionally in other forested areas. Listen for a loud, descending series of whistles: “PEE-pee-pee-peer.”
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