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Certainty of paternity in two coucal species with divergent sex roles: the devil takes the hindmost.

Ignas SafariWolfgang Goymann
Published in: BMC evolutionary biology (2018)
The results suggest that exclusive paternal care in black coucals is not maintained by male certainty of parentage, and extra-pair fertilizations are unlikely to be a female strategy for seeking 'good genes'. Extra-pair paternity in black coucals may reflect the inability of males to guard and copulate with the female after the onset of incubation, and a female strategy to demonstrate her commitment to other males of her social group.
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