Asynchronous hatching in birds provides a density-dependent system for maximizing parental reproductive success (Lack 1947, Mock 1984, Mock and Parker 1997). This mechanism allows adjustment to food shortages during the nestling season that cannot be predicted earlier, during egg-laying and incubation (Mock and Schwagmeyer 2009). Evidence of this has been found throughout the avian world and it usually manifests in some form of infanticide (i.e., killing of dependent young by conspecifics; Hrdy 1979, Mock 1984, Morandini and Ferrer 2014). Kin infanticide can occur via siblicide, resulting from overt aggression of siblings, or parental infanticide, resulting from overt aggression of a parent (Hrdy 1979, Mock 1984, Franke et al. 2013). Explanations for this behavior are often linked to a limiting resource, usually food (Hrdy 1979, Newton 1979)....

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