Biology:Egret

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Short description: Type of bird of the heron family
Egret
Eastern great egret (Ardea alba modesta)
Eastern great egret (Ardea alba modesta)
Scientific classificationEdit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Aves
Order: Pelecaniformes
Family: Ardeidae
Subfamily: Ardeinae
Groups included

Egretta
Ardea
Bubulcus
Mesophoyx

Cladistically included but traditionally excluded taxa

Nycticorax
Nyctanassa
Gorsachius
Butorides
Agamia
Pilherodius
Ardeola
Syrigma

Egrets (/ˈɡrəts/ EE-grəts) are herons, generally long-legged wading birds, that have white or buff plumage, developing fine plumes (usually milky white) during the breeding season. Egrets are not a biologically distinct group from herons and have the same build.

Biology

Great egret in flight
Egrets at dusk in Kolleru Lake, Andhra Pradesh, India

Many egrets are members of the genera Egretta or Ardea, which also contain other species named as herons rather than egrets. The distinction between a heron and an egret is rather vague, and depends more on appearance than biology. The word "egret" comes from the French word aigrette that means both "silver heron" and "brush", referring to the long, filamentous feathers that seem to cascade down an egret's back during the breeding season (also called "egrets").

Several of the egrets have been reclassified from one genus to another in recent years; the great egret, for example, has been classified as a member of either Casmerodius, Egretta, or Ardea.

In the 19th and early part of the 20th centuries, some of the world's egret species were endangered by relentless plume hunting, since hat makers in Europe and the United States demanded large numbers of egret plumes, leading to breeding birds being killed in many places around the world.[1]

Several Egretta species, including the eastern reef egret, the reddish egret, and the western reef egret, have two distinct colours, one of which is just white. The little blue heron has all-white juvenile plumage.

Species in taxonomic order

Egret from Egypt
Egret at Palakkad, India

Habitat

Egrets inhabit all continents; although they typically avoid the coldest regions, arid deserts, and very high mountains. They hunt and live in both saltwater and freshwater marshes.[2]

References

  1. "Great Egret". 13 November 2014. https://www.audubon.org/field-guide/bird/great-egret. 
  2. The Cornell Lab of Ornithology. "Egret". Cornell University. http://www.allaboutbirds.org/guide/Great_Egret/id. 

External links