Great Knot
Calidris tenuirostris
Medium-sized, stocky shorebird found almost exclusively on coastal mudflats during migration, seldom inland. Distinctive adult in breeding plumage has a brick-orange upperwing patch, blackish back, and chest with black mottling. Duller nonbreeding and juvenile plumages are grayish brown above, white below, with grayish mottling in neck and upper breast. Smaller Red Knot much paler in nonbreeding plumage and has shorter bill. Flight call a sharp, whistled “kweet-kweet.”
分类信息
- 学名
- Calidris tenuirostris
- 命名信息
- (Horsfield, 1821)
- 目
- Charadriiformes
- 科
- Scolopacidae
- 属
- Calidris
分布与栖息地
Their breeding habitat is tundra in northeast Siberia, Russia. They nest on the ground laying about four eggs in a ground scrape. They are strongly migratory wintering on coasts in southern Asia through to Australia. This species forms enormous flocks in winter. <p>The species is also recorded in low numbers in western Alaska, United States, most years, and has occurred as a vagrant in British Columbia, Canada, and in Oregon, West Virginia, and Maine, in the U.S.
- 繁殖区
- PAL : low Arctic and subarctic montane tundra: ne Siberia from Yakutsk e to Anadyr Pen.
- 非繁殖区
- OR, AU : coastal Australasia: ne Arabian Pen., coastal s, se Asia, Indonesian Arch., Taiwan, se China, Philippines, nw, s New Guinea, Australia including Tasmania
- 迁徙
- Complete migrants
行为
These birds forage on mudflats and beaches, probing or picking up food by sight. They mainly eat molluscs and insects.
保护状况
The great knot is one of the species to which the Agreement on the Conservation of African-Eurasian Migratory Waterbirds (AEWA) applies.<p>Since 5 May 2016 and as of August 2023[update], the great knot is listed as critically endangered in Australia under the federal Environment Protection and Biodiversity Conservation Act 1999 (EPBC Act), with the next assessment due on 30 October 2023.[2] A study published in Biological Conservation in March 2023 listed 23 species which the authors considered to no longer meet the criteria as threatened species under the EPBC Act, including the great knot. The reason for the assessment was "Populations now stable or declining at a rate less than threshold".[7][8]<p>Under state and territory legislation, the species is as of August 2023[update] listed as vulnerable in New South Wales and the Northern Territory; endangered in South Australia; and critically endangered in Queensland, Victoria, and Western Australia.[2]
- 种群趋势
- declining
照片
分布
鸟叫声
其他鸟类
South Moluccan Cicadabird
Edolisoma amboinense
Small cuckooshrike with a restricted range, found only on the South Moluccan islands. Males are grayish. More distinctive female is grayish on the back, and buff below, with fine barring. Found in wooded habitats. Vocalizations apparently unknown. Female easily distinguished from much grayer Pale Cuckooshrike, which also has unbarred underparts.
Snares Penguin
Eudyptes robustus
Medium-sized crested penguin, endemic to New Zealand. Note the thin, vivid yellow eyebrow that droops behind the eye to form a bushy tufted crest. Also look for prominent pale pink skin at the base of its chunky red bill. Breeds in colonies only on the Snare Islands. Adults disperse widely in winter. Vagrants recorded molting around South, Stewart, Chatham, and Subantarctic Islands. Forages in small groups at sea. Distinguished from Fiordland Penguin by conspicuous pale pink skin at the base of the larger bill and the lack of white cheek stripes. Told apart from Erect-crested Penguin by crest beginning toward the top of the bill and splaying out more dramatically. Rockhopper Penguin is smaller.
White-eyed Starling
Aplonis brunneicapillus
An attractive starling. Adult is entirely dark glossy-green with a long, deeply forked tail, a bushy crest, and a gleaming white eye. Bill is thick and stubby. Juvenile lacks long tail, has dark eye, and is scaly below with pale mottling. Generally uncommon in forest and forest edge to 800 meters of elevation, including in swamp forest. Juvenile resembles Singing Starling, but distinguished by dark eye and scaly belly. Calls include harsh chattering and metallic whistles in flight.
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。