Red-fronted Coot
Fulica rufifrons
Fairly common coot of lowlands. Found on fresh to brackish ponds and lakes; also marshy wetlands with little open water. Often near cover, rarely far out on open water. Walks on shore more than other coots. As well as the diagnostic dark red forehead shield and bright yellow bill, note the big white wedges under the tail, which with behavior, often suggest a gallinule as much as a coot. Juvenile is dark overall with whitish throat and dull bill and shield. Often occurs in same areas as Red-gartered Coot.
识别特征
The red-fronted coot is 38 to 43 cm (15 to 17 in). Two male specimens weighed 685 and 735 g (24 and 26 oz) and one female 550 g (19 oz). The sexes are alike. Adults have a yellow bill, a dark chestnut-red frontal shield, and olive legs and feet. Unique among coots, their feet are not lobed. Their plumage is almost entirely dark slate gray except for white undertail coverts. Juveniles have a blackish bill, white spots on the throat, and gray-brown plumage with the same white undertail coverts as adults.
分类信息
The red-fronted coot is monotypic.
- 学名
- Fulica rufifrons
- 命名信息
- Philippi & Landbeck, 1861
- 目
- Gruiformes
- 科
- Rallidae
- 属
- Fulica
分布与栖息地
The red-fronted coot is found coastally from southern Peru to central Chile, in at least one site in Bolivia, and from southeastern Brazil south through Uruguay to east central Argentina. It has also occurred as a vagrant in Paraguay and the Falkland Islands, though the last sighting at the latter location was in 1924. Clements extends its range to Tierra del Fuego. Fossils of this species are known from the Laguna de Tagua Tagua formation of Chile.<p>The red-fronted coot is primarily a bird of the lowlands, ordinarily ranging from sea level to 800 m (2,600 ft), but it occurs casually as high as 2,100 m (6,900 ft) in Argentina and is regularly found at 3,700 m (12,100 ft) at Alalay Lake, Bolivia. It inhabits the shallows of semi-open marshes and reedy lakes, especially those with floating vegetation such as duckweed.
- 迁徙
- Complete migrants
行为
No regular movements of the red-fronted coot have been documented. However, sightings of vagrants outside its usual range suggest at least some wandering or dispersal. It appears to be only a winter inhabitant in the northern part of its Brazilian range.<p>The red-fronted coot feeds mostly on the surface, pecking at vegetation, though it also dives for submerged food. In addition, it is known to graze near its usual marshes when they seasonally dry. It usually feeds in small flocks that sometimes include red-gartered coots (F. armillata).<p>The red-fronted coot is monogamous. Its egg-laying season varies geographically, being September and October in Chile, May to November in Argentina, and September to January in Peru. It makes a nest of plant material low to the water in floating or emergent vegetation. Clutches average five to six eggs but range from two to nine. The black-headed duck (Heteronetta atricapilla) is a significant nest parasite.<p>The red-fronted coot makes a "long, chattering series of calls, described as 'togo togo togo..., cu cu cu..., puhúh puhúh puhúh...', etc." It also has a "tuc" alarm call.
保护状况
- 种群趋势
- stable
照片
分布
鸟叫声
其他鸟类
Rufous-bellied Thrush
Turdus rufiventris
Large thrush found commonly in open woodlands, savannas, agricultural areas, urban parks, gardens where it spends a lot of time foraging on the ground. It has an olive-brown back and breast with an orange belly and a paler streaked throat. Note the yellow eyering. The song, which varies among regions, is usually long and quite monotonous.
Buller's Shearwater
Ardenna bulleri
Striking large shearwater with distinctive dark "M" pattern on upperwings. Also note crisp dark cap and clean white underwings and belly. Looks silvery-gray above when fresh, but worn birds can be more brownish. Graceful flight style. Usually easily separated from other shearwaters by wing pattern. Breeds on islands off New Zealand; ranges across the Pacific during nonbreeding season; uncommon off the west coast of the U.S. in fall. Rarely seen from land, prefers to stay offshore. Found singly or in flocks with other shearwaters.
Sulawesi Myna
Basilornis celebensis
A glossy-black starling with a rounded crest and prominent pale markings on cheeks and breast sides. Juvenile dark brown with a pale underside. Inhabits canopy of forest, forest edge, and nearby degraded areas within lowlands and foothills, typically in pairs or small groups. Distinguished from Short-tailed and Asian Glossy Starlings by large-headed appearance (due to crest) and conspicuous pale patches in plumage. Calls include a clear, metallic, piercing “tzew” and “tzip” as well as “zowee” notes; also gives quiet buzzy warbles.
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