| 词条 | Tricolored heron | |||||||
| 释义 |
| status = LC | status_system = IUCN3.1 | status_ref = [1] | image = Tricolored Heron Wading.jpg | genus = Egretta | species = tricolor | authority = (Statius Muller, 1776) | range_map = Egretta_tricolor_map.svg | range_map_caption = Range of E. tricolor {{leftlegend|#FFFF00|Breeding range|outline=gray}}{{leftlegend|#008000|Year-round range|outline=gray}}{{leftlegend|#0000FF|Wintering range|outline=gray}} }} The tricolored heron (Egretta tricolor), formerly known as the Louisiana heron, is a small species of heron that is native to coastal parts of the Americas. In the Atlantic region in ranges from northeastern United States, south along the coast, through the Mexican Gulf and the Caribbean, to northern South America as far south as Brazil. In the Pacific region it ranges from Peru to California, but it is only a non-breeding visitor to the far north. Tricolored heron's breed in swamps and other coastal habitats. It nests in colonies, often with other herons, usually on platforms of sticks in trees or shrubs. In each clutch, 3–7 eggs are typically laid. This species measures from {{convert|56|to|76|cm|in|abbr=on}} long and has a wingspan of {{convert|96|cm|in|abbr=on}}. The slightly larger male heron weighs {{convert|415|g|oz|abbr=on}} on average, while the female averages {{convert|334|g|oz|abbr=on}}.[3] It is a medium-large, long-legged, long-necked heron with a long pointed yellowish or greyish bill with a black tip. The legs and feet are dark. Adults have a blue-grey head, neck, back and upperwings, with a white line along the neck. The belly is white. In breeding plumage, they have long blue filamentous plumes on the head and neck, and buff ones on the back. The tricolored heron stalks its prey in shallow or deeper water, often running as it does so. It eats fish, crustaceans, reptiles, and insects. GalleryReferences
1. ^{{IUCN|id=22696931 |title=Egretta tricolor |assessor=BirdLife International |assessor-link=BirdLife International |version=2013.2 |year=2012 |accessdate=26 November 2013}} 2. ^1 {{cite web |url=http://www.pwrc.usgs.gov/bioeco/tricolor.htm |title=Biological and Ecotoxicological Characteristics of Terrestrial Vertebrate Species Residing in Estuaries: Tricolored Heron |publisher=USGS }}
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External links{{Commons category|Egretta tricolor}}{{Wikispecies|Egretta tricolor}}
4 : Egretta|Wading birds|Birds of the Americas|Birds described in 1776 |
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