A small flock of birds or fishes.
1832. We saw several small pods of coots go by; one of them came so near that I brought down one of the number composing it, with bird shot.D. Webster, Letters, i. 526. (N.E.D.)
1840. The Sperm Whale is gregarious; and usually occurs in parties, which are termed by whalers schools and pods: the former name expressing the greater, and the latter the less number of individuals congregated together.F. D. Bennett, Whaling Voyages, ii. 171. (N.E.D.)