Eastern great egret | |
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Non-breeding plumage in Tasmania | |
Scientific classification | |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | Aves |
Order: | Pelecaniformes |
Family: | Ardeidae |
Genus: | Ardea |
Species: | A. alba |
Trinomial name | |
Ardea alba modesta J.E. Gray, 1831 |
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Yellow: breeding, green: year-round, blue: nonbreeding | |
Synonyms | |
Ardea modesta |
Ardea modesta
The eastern great egret (Ardea alba modesta), a white heron in the genus Ardea, is a subspecies or rarely treated species of the great egret (A. alba). It was first described by British ornithologist John Edward Gray in 1831.
Although a study argued for full species status in 2005, most taxonomists consider it to be a subspecies.
Measuring 83–103 cm (33–41 in) in length and weighing 0.7–1.2 kg (1.5–2.6 lb), the eastern great egret is a large heron with all-white plumage. Its bill is black in the breeding season and yellow at other times, and its long legs are red or black. The colours of the bare parts of the face change to green during the breeding season. The breeding plumage is also marked by long neck plumes and a green facial area. The eastern great egret can be distinguished from other white egrets and herons in Asia and Australia by its very long neck, one and a half times as long as its own body.
The eastern great egret has a wide distribution throughout Asia and Oceania, with breeding populations in Pakistan, India, Sri Lanka, Bangladesh, Burma, Thailand, China, Korea, north-eastern Russia, Japan, Indochina, Indonesia, Papua New Guinea, the Solomon Islands, Australia, and New Zealand. The egret breeds across Australia but only rarely in the southwest of the continent or dry interior. The largest colonies within Australia are in the Top End and Channel Country, which can number several thousand pairs. Colonies in the southeast of Australia can number several hundred pairs. The bird is an uncommon autumn and winter visitor to Tasmania.