Ynghylch

The rook is a large crow that makes a big nest out of twigs in the top of trees, and gathers in large colonies known as 'rookeries'; they often nest in villages and graveyards, but are also birds of farmland and grassland. The male courts the female with a display of strutting, bowing and cawing, and between three and five eggs are laid after mating. Rooks are omnivorous and feed on insects, earthworms, seeds and root crops, sometimes caching their food for later.