Description

A raven is one of several larger-bodied species of the genus Corvus. These species do not form a single taxonomic group within the genus.
Corvus is a widely distributed genus of medium-sized to large birds in the family Corvidae. The genus includes species commonly known as crows, ravens, rooks and jackdaws; there is no consistent distinction between “crows” and “ravens”, and these appellations have been assigned to different species mainly on the basis of their size, crows generally being smaller than ravens.

Ranging in size the 45 or so members of this genus occur on all temperate continents except South America, and several islands. The crow genus makes up a third of the species in the family Corvidae. The members appear to have evolved in Asia from the corvid stock, which had evolved in Australia. The collective name for a group of crows is a “flock” or a “murder.”

Recent research has found some crow species capable of not only tool use, but also tool construction. Crows are now considered to be among the world’s most intelligent animals with an encephalization quotient equal to that of many non-human primates.

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https://www.rmrp.org/