A collective noun for Hawks is a kettle, a boil, or a cast. A kettle is a group of hawks that are flying or swirling in the sky. A boil is a group of hawks that are flying in a tight formation. A cast is a group of hawks that are flying in a wide formation. Other collective nouns for a group of hawks include a leash, a moulting, a screw, a stream, an aerie, a schizophrenia, a knot, and a mews.
