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.
Rooks also have a straighter, more pointed bill, unlike the Carrion Crow's thicker, blunter and more curved bill.
Corvid Identification Video
Watch the BTO Rook Identification video to help you tell apart a Rook from a Crow.
Find out more about Rooks
You can find out more about Rooks, including their breeding behaviour and distribution, by having a look at the BTO's July 'Bird of the Month' feature.
Upland bird recording and monitoring (1-day, Dalmellington, Ayr)
Brush up on your upland bird identification by songs and calls. Learn more about opportunities for participation, and practice techniques for BirdTrack and the Breeding Bird Survey (BBS). Find out about the BBS ‘Upland...
What we can learn from 25 years of watching gardens
Exploring the value of a complete quarter-century of weekly garden bird observations from BTO's Garden BirdWatch covering the length and breadth of the country.