Fig. 6From: Certainty of paternity in two coucal species with divergent sex roles: the devil takes the hindmostNumber of extra-pair offspring per clutch in black coucals in relation to how many males sired these extra-pair offspring. The numbers above each circle represents the number of clutches which had the respective combination, e.g. 47 clutches contained 1 extra-pair young sired by 1 extra-pair fatherBack to article page