Nava's Wren
Hylorchilus navai
Very local in humid evergreen forest of limestone (karst) lowlands and foothills in southernmost Veracruz and adjacent Chiapas; endemic. Stays on or near the ground, moving quickly over and among limestone boulders, popping in and out of caves and crevices. Like most wrens, heard more often than seen, but can be curious; sometimes appears at close range, bobbing and holding its tail cocked. Distinctive: rather chunky with a very long bill and a whitish bib.
识别特征
Nava's wren is 16 cm (6.3 in) long; a female weighed 29.3 g (1.03 oz). The adults have a rich brown crown and upperparts and a tawny face. Their throat and upper chest are whitish that transitions to pale gray on the lower chest and gray-brown at the vent. The lower chest has faint scalloping and the flanks are sooty brown.
分类信息
Nava's wren was originally treated as a subspecies of Hylorchilus sumichrasti, which at that time was called slender-billed wren. After the split, the now-monotypic H. sumichrasti was renamed Sumichrast's wren. Nava's wren is also monotypic.
- 学名
- Hylorchilus navai
- 命名信息
- Crossin & Ely, 1973
- 目
- Passeriformes
- 科
- Troglodytidae
- 属
- Hylorchilus
分布与栖息地
Nava's wren occurs in a small area of southern Mexico, in southeastern Veracruz, western Chiapas, and barely into northeastern Oaxaca. It inhabits undisturbed forest with outcrops of Karst limestone between the elevations of 75 and 800 m (246 and 2,625 ft).
- 迁徙
- Resident species
行为
Though no dietary data are available for Nava's wren, it probably feeds mostly or entirely on invertebrates. It forages on the ground, especially among rocks and on rock faces.<p>The breeding phenology of Nava's wren has not been documented.<p>The male Nava's wren sings "a varied, often stuttering warble of mellow whistles" [1]. The female's song is "an introductory note followed by rapid series of 8 or more loud whistles" [2]. The species' call is "a metallic 'tink'" [3].
保护状况
- 种群趋势
- declining
照片
分布
鸟叫声
其他鸟类
Lichtenstein's Sandgrouse
Pterocles lichtensteinii
Small, shy sandgrouse of harsh deserts. Beautifully patterned all over with fine black stripes. Male has black-and-white forehead pattern and broad sandy and black horizontal bars across his breast. Both sexes have a pale yellowish eyering. Rather compact with a short rear. Inhabits stony, mountainous deserts. Unlike most other sandgrouse, drinks at dusk. In flight utters odd, urgent squeaks.
Knob-billed Duck
Sarkidiornis melanotos
Large bicolored waterbird. Both sexes are iridescent purplish-green above with a white or buffy breast. Males have a large black lump on the bill, gray flanks and whitish belly, whereas females have a plain bill and gray flanks. Note all dark wings. Occurs throughout much of Africa, India, and Southeast Asia. Found in freshwater rivers, lakes, and marshes where it is usually uncommon. Normally silent.
Prairie Falcon
Falco mexicanus
Large, brown-and-white falcon of dry, open areas in western North America. Pale brown above and white below, with dark streaks and prominent mustache. Note the dark armpits to separate from Peregrine Falcon. Nests on cliffs, but ranges out over nearby grasslands and deserts when hunting. Feeds mainly on small rodents and birds.
开始您的观鸟之旅
在户外识别鸟类，并在下一次观察时随手查阅鸟类图鉴。