Fairly common in farmland and other semiopen areas with hedges and groups of tall trees, where nests in rookeries. Forages on ground, usually in flocks, and associates readily with crows and jackdaws. Easily passed off as a crow unless you see the diagnostic pale patch at base of bill. Rook calls are higher pitched and less rolling than crow calls. Juvenile lacks pale bill base and is very similar to Carrion Crow, but bill a little more tapered; pale bill base develops late in first winter.