
The SciencesAugust 1, 1984
Cooperative Breeding in the Acorn Woodpecker
The birds share mates and raise their young in groups. Study of the acorn woodpecker's unusual social system shows how natural selection yields both cooperation and competition

Cooperative Breeding in the Acorn Woodpecker
The birds share mates and raise their young in groups. Study of the acorn woodpecker's unusual social system shows how natural selection yields both cooperation and competition