Co-operative rearing in the Bell Miner

Abstract

A Bell Miner colony consists of distinct groups, each of which is probably a family originating from one mated pair. Growth and behaviour during the post-fledging period are described. Begging behaviour is subdued; there is no wing-fluttering. The food is mainly scale insects. Young are fed at a high rate, both by members of their own group and by neighbouring birds without young. Helping may be an adaptation to a widely varying climate. It is suggested that Skutch's view on the origin of helping may be correct.