Wrentit
Chamaea fasciata
A plump, large-headed, brownish bird with an extremely long tail. Plain overall with no distinctive plumage features; look for pale eye and stubby bill. Difficult to see, but often heard giving an accelerating series of hard chip notes. Usually solitary or in pairs. Skulks through low, dense vegetation, especially chaparral. Restricted to the Pacific coast of North America, from Oregon to northern Baja. Not closely related to any other species in the Western Hemisphere. Might be confused with Bushtit, but larger and much different behavior and vocalizations.
识别特征
The wrentit is a small, 15 cm (5.9 in) bird with uniform dull olive, brown, or grayish plumage. It has short wings and a long tail often held high (hence the comparison to wrens). It has a short bill and a pale iris. Given its retiring nature and loud voice, the wrentit is more likely to be detected by its call than by sight. The distinct sound that it makes is similar to the sound of a ping-pong ball falling on the table.
分类信息
The wrentit has been variously placed in its own family, the Chamaeidae, or with the long-tailed tits (Aegithalidae), the true tits and chickadees (Paridae), the "Old World warblers" (Sylviidae), and with the "Old World babblers" (Timaliidae). The American Ornithologists' Union places the wrentit in the latter family, giving it the distinction of being the only babbler known from the New World. This is based on DNA–DNA hybridization studies, which are phenetic, however, and therefore not considered methodologically adequate today.[citation needed]<p>Through DNA sequence analysis, it was subsequently discovered that the wrentit was more closely allied to Sylvia warblers and some aberrant "babblers". These consequently must be placed in the family Sylviidae together with the wrentit and the parrotbills which also turned out to be close relatives. Thus, the wrentit is the only American species of the "true" or sylviid warblers. Peculiarly, the Dartford warbler and close relatives like Marmora's warbler bear an uncanny resemblance to the wrentit; their ecology is quite similar indeed, as all are birds of Mediterranean scrub. However, biogeography and the molecular data build a strong case for this similarity being a case of convergent evolution between birds that are close relatives but by far not as close as their appearance would suggest.<p>Alice Cibois suggested that as some babblers are closer to typical warblers than these are to marsh-warblers for example, the Sylviidae should be merged into the Timaliidae. As such an abolishing of the senior synonym would require a formal International Commission on Zoological Nomenclature ruling and the typical warblers and relatives are still a monophyletic group at present, this proposal is not advanced by most researchers until the remaining Sylviidae and Timaliidae genera are studied as regards their relationships.[citation needed]<p>In 2019, a major taxonomic revision of species formerly classified as "babblers" recovered Chamaea as being most closely allied with the parrotbills and fulvettas, which are otherwise an exclusively Asian group. Due to their phylogenetic and morphological distinctiveness, the family Paradoxornithidae was revived for this group, including the wrentit.
- 学名
- Chamaea fasciata
- 命名信息
- (Gambel, 1845)
- 目
- Passeriformes
- 科
- Chamaeidae
- 属
- Chamaea
分布与栖息地
The wrentit is a sedentary (non-migratory) resident of a narrow strip of coastal habitat along the western coast of North America, being found from Oregon south through California, to Baja California, the northern state of the Baja California peninsula.<p>It is usually restricted to certain chaparral and woodland habitats. It nests in 1 metre (3 ft) high shrubs such as poison oak (Toxicodendron diversilobum), coyote bush (Baccharis pilularis) and California blackberry (Rubus ursinus). Logging and other changes in habitat have led to this species expanding its range recently, particularly northwards.
- 迁徙
- Resident species
行为
Wrentits mate for life, forming pair bonds only a few months after hatching. Both sexes sing; the faster rhythm of the male's song is one of the few ways to differentiate the sexes. Both sexes also defend their territory year-round and participate in building the nest, a four-stage process that takes about two weeks. The three or four eggs are incubated for 14 days, again by both sexes. The chicks fledge after 15 days (at which stage they are unable to fly) and are fed by their parents for another 40 days.<p>The wrentit feeds by skulking through dense scrub gleaning exposed insects found by sight. It feeds primarily on beetles, caterpillars, bugs, and ants, but also takes small berries and seeds.
保护状况
- 种群趋势
- declining
照片
分布
鸟叫声
其他鸟类
Cockatiel
Nymphicus hollandicus
Tiny cockatoo with a long pointed tail. When perched, the yellowish face and crest and orange cheek patch of the male are distinctive. In flight has dark wing tips and bold white wing panels contrasting with a gray back. Calls frequently with a tuneful fast-whistled "wee-rooo".
Bananaquit
Coereba flaveola
Tiny, active, warbler-like bird of tropical and subtropical forest edge, woodland, and gardens. Feeds on nectar and fruit, and in some areas visits bird feeders. Variable plumage across range, especially in the Caribbean, but always note small size and sharp, slightly decurved bill. Most populations have a bold white eyebrow and yellow underparts. Throat color varies from pale gray on mainland (Mexico to South America) to white on some island populations (including Cozumel) or sooty gray (Greater Antilles). Some birds in the Lesser Antilles are entirely black. Song is variable across range but usually high-pitched and scratchy.
Himalayan Cuckoo
Cuculus saturatus
Visually indistinguishable from Oriental Cuckoo. Adult male is gray above with a black-and-white-barred belly and a dark gray tail; females usually look similar, but some (known as hepatic morph birds) have cinnamon-brown upperparts with black barring throughout. Intermediate in size between Common and Lesser Cuckoos; distinguished from both species by buffy (not white) under-tail feathers and from Lesser Cuckoos by yellow iris. Song is a series of five notes, with the leading note being sharper and more distinct than the four that follow; compare with Oriental Cuckoo’s series of mellow paired notes. Breeds in a wide range of different lowland and hill forests; also more open habitats outside of breeding season.
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