Is Laying a Large Egg Expensive? Female-Biased Cost of First Reproduction in a Petrel

@inproceedings{SanzAguilar2012IsLA,
  title={Is Laying a Large Egg Expensive? Female-Biased Cost of First Reproduction in a Petrel},
  author={Ana Sanz‐Aguilar and Eduardo M{\'i}nguez and Daniel Oro},
  year={2012}
}
ABSTRACT. Differential reproductive investment between sexes can lead to asymmetric costs of reproduction in birds. Long-lived procellariiform seabirds are single-egg layers with little sexual dimorphism and similar parental investment in incubation and chick rearing. However, sex-specific tasks exist at the beginning of the breeding season, including egg production by females (no courtship feeding by males in this group of species) and nest and mate guarding by males. Costs of reproduction… 
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