Jamaican Lizard-Cuckoo
Coccyzus vetula
An impressive long-tailed bird of moist mid-elevation woodlands including secondary growth, where it feeds in the understory by peeking and probing into vegetation in pursuit of insects and lizards. Generally solitary and secretive, but not shy. Note this species’ long, straight, narrow bill and buff underparts. The Chestnut-bellied Cuckoo is similar in overall shape, but it is somewhat larger with a chestnut belly and a grayish chest; also note its bill is much shorter and somewhat curved compared to Jamaican Lizard-Cuckoo. The passingly similar Mangrove Cuckoo is somewhat smaller, shorter billed, lacks an eyering, and has a black mask. Jamaican Lizard-Cuckoos are often first detected by voice: a rapid-fire, ratcheting “k-k-k-kuh-kuh-kuh-kuh-kuh…” that grows slower and louder as it progresses; usually given at a uniform pitch.
识别特征
The Jamaican lizard cuckoo is 38 to 40 cm (15 to 16 in) long, about half of which is the tail, and weighs 86 to 105 g (3.0 to 3.7 oz). It has a long, straight, rectangular bill with a black maxilla and a paler mandible. The sexes have the same plumage. Adults have a brown forehead, crown to below the eye, and nape. Their upperparts are grayish with rufous primaries. Their throat is whitish and the rest of the underparts are rufous that is lighter on the undertail coverts. Their tail feathers are gray with wide white tips; the central pair have a black band above the tip. Their eye is surrounded by bare red skin. Juveniles have narrower tail feathers than adults and buffy tips on the secondaries.
分类信息
The Jamaican lizard cuckoo and three other lizard cuckoos were for a time considered a single species. Individually they were previously placed in genus Saurothera that was later merged into the current Coccyzus, and they are considered a superspecies. The Jamaican lizard cuckoo is monotypic.
- 学名
- Coccyzus vetula
- 命名信息
- (Linnaeus, 1758)
- 目
- Cuculiformes
- 科
- Cuculidae
- 属
- Coccyzus
分布与栖息地
The Jamaican lizard cuckoo is found throughout the island from sea level to 1,200 m (3,900 ft) of elevation. It primarily inhabits lowland tropical evergreen forest and is also found in tropical deciduous forest, more open woodlands, and semi-arid landscapes of trees and shrubs.
- 迁徙
- Vertical migration
行为
The Jamaican lizard cuckoo is not migratory.<p>The Jamaican lizard cuckoo forages mostly from the forest mid-story to the canopy, running along branches and gliding from tree to tree. Its diet is cosmopolitan and includes Anolis lizards, adult and larval insects, mice, nestling birds, and sometimes tree frogs. Young are fed mainly with lizards.<p>The Jamaican lizard cuckoo's breeding season generally spans from March to August, though courtship has been observed in October. It makes a flat platform nest of twigs lined with leaves, placed well hidden in a tangle of branches or bromeliads. Both adults incubate the eggs and care for nestlings.<p>The Jamaican lizard cuckoo's principal vocalization is a "[r]apid, low 'cak-cak-cak-ka-ka-ka-k-k'."
保护状况
- 种群趋势
- declining
照片
分布
鸟叫声
其他鸟类
Isabela Oriole
Oriolus isabellae
A medium-sized bird of lowland forest, including secondary habitats and bamboo in northern Luzon. Yellow underparts blend into olive upperparts. Bill fairly long and silver. Forages for fruit and insects, sometimes in mixed-species flocks. Similar to White-lored Oriole, but slightly larger, with a silver rather than red bill and no white spot in front of the eye. Song consists of a medium-pitched, upslurred whistle, “hoowit!”.
Bright-rumped Yellow-Finch
Sicalis uropygialis
Locally fairly common in the high Andes. Often in flocks, sometimes by the hundreds, and associates readily with other seed-eating birds. Feeds mainly on the ground, often on roadside gravel or in animal corrals. Distinctive in most of range, and distinguished readily from other yellow-finches by combination of silvery-gray cheeks and grayish back and flanks. The namesake bright rump is usually hidden and is a poor field mark. In Chile, Greenish Yellow-Finch occurs mainly at lower elevations.
Mexican Violetear
Colibri thalassinus
Rather large, overall bright green hummingbird of highlands. Favors pine-oak forest and edge, especially overgrown clearings and roadsides with dense flower banks. Fairly common and is especially conspicuous when singing. Song is a jerky, metallic, chipping song given tirelessly from an exposed twig at middle to upper levels in trees. When feeding often stays fairly well hidden within flowers. Note overall deep green plumage with dark violet cheek and breast patches, and broad dark tail band.
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