Not to be confused with the reddish egret.
|Adult from Nagarhole National Park|
The purple heron (Ardea purpurea) is a wading bird in the heron family Ardeidae, breeding in Africa, central and southern Europe, and southern and eastern Asia. The European populations are migratory, wintering in tropical Africa; the more northerly Asian populations also migrate further south within Asia. It is a rare but regular wanderer north of its breeding range.
The purple heron is a large bird, 78–97 cm (31–38 in) in length with a standing height from 70 to 94 cm (28 to 37 in) and a 120–152 cm (47–60 in) wingspan. However, it is slender for its size, weighing only 0.5–1.35 kg (1.1–3.0 lb). It is somewhat smaller than the grey heron, from which it can be distinguished by its darker reddish-brown plumage, and, in adults, darker grey back. It has a narrower yellow bill, which is brighter in breeding adults. The most similarly-colored heron is the Goliath heron, which is considerably larger.
There are three or four subspecies:
- Ardea purpurea purpurea Linnaeus, 1766. Africa, Europe north to the Netherlands, and southwestern Asia east to Kazakhstan.
- Ardea purpurea bournei (de Naurois, 1966), Bourne's heron. Cape Verde Islands (included in purpurea by some authors, but treated as a distinct species Ardea bournei by some others).
- Ardea purpurea madagascariensis Oort, 1910. Madagascar.
- Ardea purpurea manilensis Meyen, 1834. Asia from Pakistan east to the Philippines and Indonesia, and north to Primorsky Krai, Russia.
It feeds in shallow water, spearing fish, frogs, insects, spiders, small birds, rodents, salamanders, and snakes. It will often wait motionless for prey, or slowly stalk its victim. It tends to keep within reed beds more than the grey heron, and is often inconspicuous, despite its size.
It has a slow flight, with its neck retracted. This is characteristic of herons and bitterns, and distinguishes them from storks, cranes and spoonbills, which extend their necks. The long neck of the purple heron looks particularly snake-like, with more of an S-shape in flight. The call is a loud croaking "krek".
The purple heron is one of the species to which the Agreement on the Conservation of African-Eurasian Migratory Waterbirds (AEWA) applies.
- BirdLife International (2012). "Ardea purpurea". IUCN Red List of Threatened Species. Version 2013.2. International Union for Conservation of Nature. Retrieved 26 November 2013.
- "Purple heron videos, photos and facts - Ardea purpurea". ARKive. Retrieved 2011-10-18.
- Sálim Ali (1996). The Book of Indian Birds. Bombay: Bombay Natural History Society. ISBN 978-0195637311.
- John B. Dunning Jr. (Editor) (1992). CRC Handbook of Avian Body Masses. CRC Press. ISBN 978-0-8493-4258-5.
- Handbook of the Birds of the World 1: 407. Lynx Edicions.
- Ornitaxa: Ardea bournei split as a separate species
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