Red-billed Pigeon
Patagioenas flavirostris
Large dark pigeon. Body and wings mostly bluish-gray with maroon-colored neck and shoulders. Note red bill with pale yellowish tip. Immature paler grayish without maroon tones. Common from Mexico to Costa Rica, mainly in lowlands and foothills. Barely enters the U.S. in Rio Grande Valley of south Texas. Typically seen in pairs or small flocks, often perched conspicuously in a variety of habitats, including open forests, patchy farmland, and mangroves. Tends to be fairly shy. Separated from other pigeons in Middle America by large size, bill pattern, and dark tail and undertail coverts. Listen for low cooing song: “whoo, whoop-a-whoo.”
识别特征
Red-billed pigeons have largely dark, slate-gray plumage with a more maroon, though sometimes described as purple, head, neck, and wing coverts. They have pale red eyes with an orange orbital ring, along with a red bill with a yellow tip. Noticeably, they don't have iridescent collar plumage. A blue-gray belly and tail coverts, as well as a less brown back, distinguish it from most other species., such as the Ruddy Pigeon and Short-billed Pigeon. The only noticeable difference between males and females is that the females have a duller colored head and neck. Juveniles are often even more dull in color and have dark and dusky shoulders, as well as a more brown mantle and wings.<p>Compared to other birds, they are a more mid-to-large sized bird, growing to be between 30 and 37 cm (12-15 in.) in length and a weight of 230–425 g (8.1–15.0 oz).<p>Red-billed pigeons have a very distinctive call, described to be a long, high-pitched call consisting of a coooo followed by three cuk-c'-c'-coo notes. It follows an ascending sound. When taking off, the birds' wings create a noticeable clapping noise.
分类信息
- 学名
- Patagioenas flavirostris
- 命名信息
- (Wagler, 1831)
- 目
- Columbiformes
- 科
- Columbidae
- 属
- Patagioenas
分布与栖息地
Red-billed pigeons are common throughout dry forests in primarily coastal Mexico and Central America, most common in Rio Grande, though still an uncommon find during summertime. They can sometimes be found in Southern Texas, with a declining population. In almost all areas, they are rare to see during the winter.<p>Red-tailed pigeons have four reported subspecies:<p>Habitat can vary. Red-billed pigeons are most notably in dry woods and along riverside wetland areas.
- 迁徙
- Resident species
保护状况
- 种群趋势
- declining
照片
分布
鸟叫声
其他鸟类
Flores Monarch
Symposiachrus sacerdotum
A small gray-and white songbird with a black mask and chin and a bright white undertail. Upperparts slate-gray and underparts clean white. Very local, restricted to the island of Flores. Found singly or in pairs in the understory of forested hills, where it often joins mixed-species flocks. Lack of peach wash on the breast separates it from Spectacled Monarch. Song is a series of repeated “weee-weee-weee-weee” notes, with a rise in pitch near the end. Also gives scratchy “churr” notes.
Tarim Babbler
Rhopophilus albosuperciliaris
Uncommon, sandy-colored babbler of dry scrubby and weedy areas, often on hill- and mountain-sides. Readily distinguished from other brown birds in its range by its long tail, thickset appearance, pale brow, and faint dark streaking on the back. Looks like a faded version of the closely related Beijing Babbler (no range overlap). Forages on or close to the ground, often in small flocks. Varied repertoire includes a loud jumbled series of bright warbling calls, as well as bulbul-like chattering and high rattling twittering. Restricted to northwestern China.
Antipodean Albatross
Diomedea antipodensis
Huge albatross of the Southern Ocean. Two subspecies: “Gibson’s” breeds primarily on Auckland Island and ranges at sea around New Zealand and eastern Australia; “Antipodean” breeds mostly on Antipodes and Campbell Islands and ranges mainly across Pacific to Humboldt Current off Chile. Plumage highly variable, starting chocolate-brown with a white face and gradually becoming whiter over many years. Younger birds separated from Southern Royal Albatross by darker tail, brown markings on head and back, and lack of black “lips” on cutting edge of bill. Older birds more difficult to separate; focus on more coarsely marked upperwings, often with conspicuous white patch in center of wing, and lack of black “lips”. Often shows orange stain on cheek, never shown by Southern Royal. Identification from other Wandering-type Albatross is extremely difficult and often presumed by range. Older “Antipodean” often retain complete dark cap, tail, and upperwings.
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