Flock/flɑːk/ Definition 1 of 5Pro Tip 1/3Not for Singles Use 'flock' for groups, not individual birds or animals. We watched a flock of geese fly overhead. Pro Tip 2/3Specific Animals 'Flock' is typically used for birds and some animals like sheep or goats. A flock of sparrows landed in the garden. Pro Tip 3/3Natural Setting 'Flock' suggests animals in a natural or rural setting, rather than a zoo or home. She keeps a flock of chickens on her farm.