Ardea cinerea

Written by on November 19, 2010 in Indonesia Bird with 0 Comments

Ardea-cinerea, Grey Heron, Cangak Abu

Ardea-cinerea-01-800

The Grey Heron (Ardea cinerea), is a wading bird of the heron family Ardeidae, native throughout temperate Europe and Asia and also parts of Africa. It is resident in the milder south and west, but many birds retreat in winter from the ice in colder regions. It has become common in summer even inside the Arctic circle along the Norwegian coast.

It is a large bird, standing 90-100 cm tall, with a 175-195 cm wingspan and a weight of 1-2 kg. Its plumage is largely grey above, and off-white below. Adults have a white head with a broad black supercilium and slender crest, while immatures have a dull grey head. It has a powerful, pinkish-yellow bill, which is brighter in breeding adults. It has a slow flight, with its long neck retracted (S-shaped). This is characteristic of herons and bitterns, and distinguishes them from storks, cranes and spoonbills, which extend their necks. The call is a loud croaking “fraaank”. The Australian White-faced Heron is often incorrectly called Grey Heron.

Taxonomy

There are four subspecies:

* Ardea cinerea cinerea Linnaeus, 1758. Europe, Africa, western Asia
* Ardea cinerea jouyi Clark, 1907. Eastern Asia
* Ardea cinerea firasa Hartert, 1917. Madagascar
* Ardea cinerea monicae Jouanin & Roux, 1963. Islands off Banc d’Arguin, Mauritania.

It is closely related and similar to the American Great Blue Heron, which differs in slightly larger size, and chestnut-brown flanks and thighs.

Food and feeding

It feeds in shallow water, catching fish, frogs, and insects with its long bill. Herons will also take small mammals, reptiles and occasionally walbler nestlings, plovers, young and adult snipes, takes ducklings and tern chicks and other small birds. [2] It will often wait motionless for prey, or slowly stalk its victim.

In the Netherlands, the Grey Heron has become a very common species in recent decades by moving into urban environments in great numbers. There, the herons hunt as they usually would but also make use of food discarded by humans, will visit feeding times in zoos to birds such as penguins and pelicans and some individuals even make use of people feeding them at their homes.[3]

Breeding

This species breeds in colonies in trees close to lakes, the seashore or other wetlands, although it will also nest in reedbeds. It builds a bulky stick nest.

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