Raven

Corvus corax

A Raven is much larger and glossier than a crow, and has a blue sheen. Its beak is larger in proportion to its head than a crow's and it has a graduated tail (rounded end).
The blue gloss can be seen on the bird's feathers. The Raven tore pieces off the meat carcass and hid them in various places, to return to later.
Some Ravens in the Canary Islands have brown bodies with glossy black heads; the Brown-necked Raven, with brown head/neck and blue-black body is also present.

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Crow