The role of hatching asynchrony in siblicidal brood reduction of two booby species

  title={The role of hatching asynchrony in siblicidal brood reduction of two booby species},
  author={D. John Anderson},
  journal={Behavioral Ecology and Sociobiology},
  • D. J. Anderson
  • Published 1 November 1989
  • Biology
  • Behavioral Ecology and Sociobiology
SummaryHatching asynchrony (HA) of masked boobies (Sula dactylatra) in the Galápagos Islands differs from that of its sympatric congener, the blue-footed booby (S. nebouxii), in association with differences in brood reduction systems. Masked booby nestlings are obligately siblicidal, have long HA, and the probability and timing of siblicide is strongly influenced by HA. Blue-footed boobies are facultatively siblicidal and have shorter HA. Experimental shortening of masked booby HA demonstrated… 
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