Mauritius Bulbul
Hypsipetes olivaceus
A medium-sized dark gray bird with a black cap and a carrot-colored bill, endemic to the island of Mauritius. Found in remnant humid forest as well as secondary forest and some forest dominated by exotic trees; now mostly confined to middle and high elevations. Often in small, noisy groups. Somewhat similar to male Mauritius Cuckooshrike, but easily separated by the orange bill and many other details. The song is an unmusical but varied series of rattling, metallic, and scraping notes, often given from a high perch. The calls include a “chek” note and a long mew.
识别特征
The Mauritius bulbul can reach a size up to 24 cm (9.4 in). It is characterized by bright yellow-brown eyes, pink legs, and an orange to yellow-hued bill. Its plumage is generally greyish contrasted with a black crest. The plumage of the juveniles is pale brown. Their bill is blackish.
分类信息
The Mauritius bulbul was the type species of the obsolete genus Ixocincla, which united various more or less closely related bulbuls from the entire Indian Ocean region. Formerly, some authorities considered the Mauritius bulbul to belong to the genus Turdus. It has also been classified as a subspecies of the Réunion bulbul. Alternative names include the Mauritius black bulbul and the Mauritius merle.
- 学名
- Hypsipetes olivaceus
- 命名信息
- Jardine & Selby, 1837
- 目
- Passeriformes
- 科
- Pycnonotidae
- 属
- Hypsipetes
分布与栖息地
- 迁徙
- Resident species
行为
During the southern summer, the female lays two pinkish coloured eggs in a nest made from straw and roots. The incubation lasts between 14 and 16 days.<p>The diet of the Mauritius bulbul consists of insects, seeds, and fruits. The ripe berries of the non-native Spanish Flag are especially favoured.<p>In earlier times, it was often served as a dish on festive days. Later, its main threats shifted to the replacement of their forest habitat by tea plantations and invasive weeds (including L. camara, which the birds themselves help to spread) and predation by the introduced crab-eating macaque. In the mid-1970s, only 200 pairs remained, but then the decline was stopped. Today it is rare but has a quite stable population; 280 pairs were counted in 1993.
保护状况
- 种群趋势
- stable
照片
分布
其他鸟类
Black-throated Tody-Tyrant
Hemitriccus granadensis
Small flycatcher found in the Andes from Venezuela to Bolivia. Overall drab olive above and pale grayish below, with distinctive black upper throat and buffy or whitish lores. Singles or pairs forage at low levels in scrubby forest edge, sometimes following mixed-species flocks. Occurs from around 1,500-3,000m.
Rufous-tailed Tyrant
Knipolegus poecilurus
Medium-sized flycatcher found in the Andes from Venezuela to Peru as well as the tepuis of Venezuela and Brazil. Grayish-brown overall with a distinctive red eye, pale tawny belly, and tawny or grayish wingbars. Sexes similar. Found at the edge of montane forest from around 900–2,200 m. Usually perches conspicuously.
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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