title: Relative Fecundity and Parental Effort in Communally Nesting Anis, Crotophaga sulcirostris.
abstract: The contribution of eggs to the communal clutch by females of the group and the genetic contribution by males of the group are significantly skewed. The amount of parental care performed by each bird is correlated with relative egg ownership for both sexes.
authors.forename: S L
authors.initials: SL
authors.lastname: Vehrencamp