IS IT a rook, raven or crow?Corvids are considered among the most intelligent of birds, with magpies having demonstrated self-awareness in mirror tests, and crows and rooks showing their ability ...

Larger than a rook, but smaller than a raven, the carrion crow is susceptible to a calcium deficiency which causes problems with its feathers, which in turn leads to injuries.

The crow is similarly all black but significantly smaller than a raven. Crows are also fairly solitary, being found alone or in pairs.

This association led eventually to the persecution of crows as harbingers of doom and destruction and the notion that the crow and raven have ‘otherworld’ powers.

News Birds Londoners flock to world's first crow cafe - and even Billie Piper turns up A crow Yum Yum, a rook called Gilbert, another crow called Charlie and a raven called Elijah attended ...