Country diary: The Hitchcockian mystery of rooks en masse

The Rooks: Their strengths and weaknesses –

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Rook BTO - British Trust for Ornithology

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Rook - Bird Factfile

Country diary: revelling in the sight and sound of rooks

Rooks are highly gregarious birds and are generally seen in flocks of various sizes. Males and females pair-bond for life and pairs stay together within flocks. In the evening, the birds often