Siblicide in the cooperatively breeding laughing kookaburra (Dacelo novaeguineae)
I describe siblicide in the laughing kookaburra (Dacelo novaeguineae), a reverse size-dimorphic, cooperatively breeding kingfisher. Clutches were usually of three eggs, and nestlings hatched asynchronously, with intervals of 2-72 h between successive eggs. Siblicide occurred in two temporally and mechanistically distinct episodes. The youngest nestling died in one-third of all nests within days of hatching as a result of aggression from its elders. Kookaburra nestlings attacked each other using...[Show more]
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|Source:||Behavioral Ecology and Sociobiology|
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