A group of chickens - Brood
A group of young chickens - Clutch/ Chattering
A group of cranes - Sedge/ Seige
A group of crows - Horde/ Murder
A group of eagles - Convocation
A group of owls - Parliament
A group of parrots - Company/ Pandemonium
A group of pigeons - Flight/ Flock
A group of sparrows - Host
A group of woodpeckers - Descent