{"fact":"Male crows who are not the social father sometimes manage to father offspring within the group. About 7% of offspring were sired by auxiliary males within the family group.","context":"Within-group auxiliary males sired 14 offspring (6.9%), distributed in seven broods among six family groups.","source":"Andrea K. Townsend; Anne B. Clark; Kevin J. McGowan; Irby J. Lovette, Reproductive partitioning and the assumptions of reproductive skew models in the cooperatively breeding American crow, 10.1016/j.anbehav.2008.10.030","index":534}