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Maternal investment in eggs is affected by male feet colour and breeding conditions in the blue-footed booby, Sula nebouxii

BiologyBreeding BehaviorReproductive SuccessFertilityNatural SciencesEvolutionary BiologySexual SelectionSula NebouxiiReproductive BiologyMaternal InvestmentPublic HealthReproduction ResponseMale Feet ColourAnimal Behavior