Is obligate siblicidal aggression food sensitive?

  title={Is obligate siblicidal aggression food sensitive?},
  author={Jos{\'e} Luis Osorno and Hugh Drummond},
  journal={Behavioral Ecology and Sociobiology},
In avian species whose chicks show facultative siblicide, attacks increase with food deprivation. In species that show obligate siblicide, this causal relationship is not expected, but no test has been made. When we composed artificial pairs of young brown boobies, Sula leucogaster (an obligately siblicidal species), and supplied variable amounts of food to the older nestlings in each pair, food ingestion was related to the most intense form of attack, pushes, which can cause death by expelling… CONTINUE READING
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