Floreana Mockingbird
Mimus trifasciatus
A fairly large gray-and-white songbird with a long tail, curved bill, and black blotches on sides of breast. Endemic to Galápagos. Now found only on two tiny islets (Gardner and Campeón) off the coast of Floreana Island, it is the only species of mockingbird in its range. Tourists are not allowed to land on these islets, so the birds are usually seen from a boat while they are perched up on cacti or small trees.
识别特征
The Floreana mockingbird is 25 to 26 cm (9.8 to 10.2 in) long. Males weigh an average of 65.7 g (2.32 oz) and females 59.8 g (2.11 oz). Adults have a pied appearance. They have a pale supercilium, a black patch in front of the eye, a darkish one below it, and white cheeks. Their crown, upperparts, and tail are grayish brown with a few faint darker streaks. Their whitish underparts have a dark patch on the side of the breast and faint spots on the breast and flanks. The folded wing shows two white bars. The juvenile is similar to the adult but more heavily streaked.
分类信息
The Floreana mockingbird, Galapagos mockingbird (Mimus parvulus), Espanola mockingbird (M. macdonaldi), and San Cristobal mockingbird (M. melanotis) were previously placed in genus Nesomimus and were considered conspecific. They now form a superspecies. The Floreana mockingbird is monotypic.
- 学名
- Mimus trifasciatus
- 命名信息
- (Gould, 1837)
- 目
- Passeriformes
- 科
- Mimidae
- 属
- Mimus
分布与栖息地
The Floreana mockingbird was formerly abundant on Floreana Island but had been extirpated from there by 1888. It now occurs only on two islets off Floreana's shore, Campeón and Gardner-near-Floreana. The islets provide a habitat of low vegetation along their shores and arid scrub with cacti and a few trees inland.
- 迁徙
- Resident species
行为
The Floreana mockingbird mostly forages on the ground, but also in vegetation. It is primarily insectivorous but also eats cactus fruit, carrion, and probably seabird eggs.<p>The Floreana mockingbird's breeding season spans from October to April and two broods are usual. It is a cooperative breeder with up to five adults in each territory of about 2 ha (4.9 acres). The nest is a cup made of twigs lined with finer material; it is almost always placed in a cactus. The clutch size is two to four.<p>The Floreana mockingbird has a "[l]oud, melodious song [and] does not mimic other species."
保护状况
- 种群趋势
- stable
照片
分布
鸟叫声
其他鸟类
Yellow-winged Vireo
Vireo carmioli
Small yellowish bird; note bold wingbars and face pattern with short pale eyebrow and arc under the eye. Yellow underparts sometimes bright, sometimes paler whitish, but always some yellow tones. Could be mistaken for a tyrannulet but note thicker bill and more horizontal posture. Usually seen singly or in pairs, following a mixed-species flock through forest, edge, and second growth. Found at relatively high elevations in its limited range. Song is a slow series of short phrases, like a squeaky Yellow-throated Vireo.
Ambon White-eye
Zosterops kuehni
A small songbird with a conspicuous white eye-ring, a green face and upperparts, a bright yellow throat, a white belly, and a yellow base to the undertail. Pairs and small groups occur in the lowlands in forest, edge, sparsely wooded areas, and gardens. Restricted to Ambon, except for a few records from Seram. Separated from Warbling and Lemon-bellied White-eyes by its white belly, and from Seram White-eye by its green face and forecrown. Song comprises a rapid, pleasant warble. Also gives penetrating “tzew” notes.
Pearly-breasted Conebill
Conirostrum margaritae
Small tanager with uniform blue-gray plumage, paler below, with pale pinkish legs. Differs from Bicolored Conebill in lacking buffy tones below and in being paler above. Found on river islands along larger rivers, where it exclusively uses stands of middle-aged Cecropia trees. Forages high in the canopy.
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