Identifying Rooks BTO - British Trust for Ornithology

Rook_crow_montage_small.jpg Top left: Juvenile Rook by Breffni Martin. Bottom left: Adult Rook by John Harding. Right:Carrion Crow by Jill Pakenham. (Click to enlarge). Adult Rooks are easy to identify thanks to the bare, greyish-white skin around the base of their bill. The rest of their plumage is all black. A juvenile Rook, however, is similar to a Carrion Crow as it doesn't develop the bare bill-base until its second calendar year. If you're not sure, look for the Rook's characteristic flat forehead, peaked crown, ruffled drooping belly feathers and feathered thighs.

Rook BTO - British Trust for Ornithology

State of the art, gaps and future perspectives on common kestrel

Breeding Bird Survey 2022 by British Trust for Ornithology - Issuu

Rush or relax: migration tactics of a nocturnal insectivore in

Cambridge corvid cognition lab saved from closure by public

Identification of Juvenile Rooks and Carrion Crows - Corvid Isle

Rook BTO - British Trust for Ornithology

Bird ringing - Wikipedia

Black birds that aren't blackbirds