Little blue heron
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| Little blue heron | |
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| File:Egretta caerulea -Cananeia, Sao Paulo, Brasil-8.jpg | |
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E. caerulea
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| Binomial name | |
| Egretta caerulea |
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| File:Egretta caerulea map.svg | |
| Distribution of Egretta caerulea: breeding non-breeding year-round | |
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The little blue heron (Egretta caerulea) is a small heron. It breeds in the Gulf states of the US, through Central America and the Caribbean south to Peru and Uruguay. It is a resident breeder in most of its range, but some northern breeders migrate to the southeastern US or beyond in winter. There is post-breeding dispersal to well north of the nesting range, as far as the Canada–US border.
Description
This species is about 60 cm (24 in) long, with a 102 cm (40 in) wingspan, and weighs 325 g (11.5 oz). It is a medium-large, long-legged heron with a long pointed blue or greyish bill with a black tip. Breeding adult birds have blue-grey plumage except for the head and neck, which are purplish and have long blue filamentous plumes. The legs and feet are dark blue. The sexes are similar. Non-breeding adults have dark blue head and neck plumage and paler legs. Young birds are all white except for dark wing tips and have dull greenish legs. They gradually acquire blue plumage as they mature.
Ecology
The little blue heron's breeding habitat is sub-tropical swamps. It nests in colonies, often with other herons, usually on platforms of sticks in trees or shrubs. Three to seven light blue eggs are laid. The little blue heron stalks its prey methodically in shallow water, often running as it does so. It eats fish, frogs, crustaceans, small rodents and insects.
White little blue herons often mingle with snowy egrets. The snowy egret tolerates their presence more than little blue herons in adult plumage. These young birds actually catch more fish when in the presence of the snowy egret and also gain a measure of protection from predators when they mix into flocks of white herons. It is plausible that because of these advantages, they remain white for their first year.[2]
References
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- ↑ http://www.birds.cornell.edu/AllAboutBirds/BirdGuide/Little_Blue_Heron.html#coolfacts
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External links
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Wikimedia Commons has media related to Little blue heron. |
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Wikispecies has information related to: Egretta caerulea |
- Little Blue Heron Egretta caerulea - eNature.com
- Little Blue Heron – Cornell Lab of Ornithology
- Little blue heron - Egretta caerulea - USGS Patuxent Bird Identification InfoCenter
- Field guide on Flickr
- Florida Bird Sounds - Florida Museum of Natural History
- Little blue heron videos, photos, and sounds at the Internet Bird Collection
- Little blue heron photo gallery at VIREO (Drexel University)
- Little blue heron species account at NeotropicalBirds (Cornell University)
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