Rook/rʊk/ Definition 1 of 3Pro Tip 1/3Bird Identification Rooks have a bare face, distinguishing them from similar crows. Look at that bird; the greyish-white skin indicates it’s a rook. Pro Tip 2/3Natural Behavior Rooks are very social birds, often seen in large, noisy groups. The noisy group in the treetops consisted of dozens of rooks. Pro Tip 3/3Habitat Mention Rooks are referenced in rural or countryside descriptions in the UK. While driving through the countryside, you're likely to spot a rook.