{"fact":"Unlike many cooperative breeders, American crow females completely monopolize egg-laying within their own nests.","context":"Paired female breeders monopolized maternity of all offspring in their broods, whereas paired male breeders sired 82.7% of offspring","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":535}