Crows

Crows 



Scientific classification
Kingdom:
Animalia
Phylum:
Chordata
Class:
Aves
Order:
Passeriformes
Family:
Corvidae
Genus:
Corvus

Linnaeus, 1758

The crow family Corvidae contains not only crows but also birds such as jays, nutcrackers, ravens and magpies. Members of Corvidae are found on all continents apart from Antarctica.
Crows are among the most intelligent of all animals. Several species have demonstrated tool use and self-recognition in mirror tests.
The common raven is not only the largest member of the crow family, but also the largest passerine. It’s as big as – if not slightly bigger than – the common buzzard.
Crows form the genus Corvus in the family Corvidae. They are medium to large sized birds, carnivores and scavengers.
The genus includes the crow (carrion crow or hooded crow), the rookjackdaw, and the large common raven. The genus has 40 or so members on all temperate continents except for South America, and some islands.
The Corvus makes up a third of the species in the Corvidae. Crows appear to have evolved in Asia from corvid stock which had evolved in Australia. The collective name for a group of crows is a flock or, more poetically, a murder.

Intelligence

Some crow species not only use tools but also make tools. Crows are now thought to be, with parrots, among the world's most intelligent birds.
They have a brain size (adjusted for body size) as large as some apes. The jackdaw and the European magpie have a nidopallium about the same relative size as the equivalent neocortex in chimpanzees,[5] and significantly larger than is found in the gibbon.
A story of how a girl fed crows, and in return they brought her tiny gifts, shows what the birds are capable of. 
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