Snowy Egret
Egretta thula
Small white heron with black bill, black legs, and yellow feet. Lores (between eye and bill) are usually bright yellow, but flush reddish in the breeding season. Also note lacy plumes on head, breast, and back during breeding season. Immatures have duller yellow lores and more yellow extending up the legs than adults. Fairly common and widespread in North and South America; often most common along the coast. Found in a variety of wetland habitats, especially shallow marshy pools and mudflats. Forages fairly actively in shallow water, often darting after small fish. Compare with immature Little Blue Heron, which usually has more greenish legs and lores, and note Snowy’s more active feeding style.
识别特征
Adult snowy egrets are entirely white apart from the yellow lores between the long black bill and the eye, black legs, and bright yellow feet. The nape and neck bear long, shaggy plumes known as aigrettes. Immature snowy egrets have duller, greenish legs.<p>Measurements:
分类信息
Genus: Egretta; Family: Ardeidae; Order: Pelecaniformes.
- 学名
- Egretta thula
- 命名信息
- (Molina, 1782)
- 目
- Pelecaniformes
- 科
- Ardeidae
- 属
- Egretta
分布与栖息地
The snowy egret is native to North, Central and South America. It is present all year round in South America, ranging as far south as Chile and Argentina. It also occurs throughout the year in the West Indies, Florida and coastal regions of North and Central America. Elsewhere, in the southern part of the United States, it is migratory, breeding in California, Nevada, Utah, Colorado, Arizona, New Mexico, Texas, Louisiana and Mississippi. It is found in wetlands of many types; marshes, riverbanks, lakesides, pools, salt marshes and estuaries. It is not found at high altitudes nor generally on the coast. The snowy egret has occurred as a vagrant in Europe, in Iceland, Scotland and the Azores. It has also been recorded in South Africa.
- 迁徙
- Complete migrants
行为
Migration pattern: Complete migrants.
保护状况
Population trend: rising.
- 种群趋势
- rising
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分布
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其他鸟类
Gray Teal
Anas gracilis
Plain grayish mottled duck with a rounded crown. Note plain face lacking the bold stripes of Pacific Black Duck. White wing panels are distinctive in flight compared to purple/green of Pacific Black Duck. Told from female Chestnut Teal by the much paler neck/throat. One of the most common ducks in many waterways, forming enormous flocks numbering in the 1000s.
Rhinoceros Auklet
Cerorhinca monocerata
Gray seabird shaped like a football. Breeding plumage shows white belly and thin white eyebrow and mustache. Distinctive stout orange bill with pale vertical protrusion at base. Nonbreeding birds have a plainer face and lack "horn" on bill; juveniles have gray bill. Longer bill than other auklets with a flatter head. Breeds on offshore islands; otherwise found at sea, usually alone. Dives underwater for fish.
Capped Heron
Pilherodius pileatus
This gorgeous medium-sized heron is uncommon but widespread in lowlands of South America, barely extending into eastern Panama. Not likely to be mistaken: combination of silvery back, buffy neck and belly, black cap, and blue lores (sometimes radiant turquoise!) help distinguish this species from other herons. Also note the long white plumes on the back of the head. Occurs around swamps, forested ponds, and rivers, usually singly.
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