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Barn Owl Chicks Case Study

Decent Essays

Roulin, Kolliker, and Richner (2000) studied barn owl chicks to determine if they fit the current theory of nestling begging. It has been proposed that chicks will beg to indicate an honest level of hunger, or the begging will escalate in competition among the siblings to attract the parents’ attention. While begging has been associated with the parents being present, these owlets have been known to vocalize even when they are absent. The team was able to test three predictions given the hypothesis that, while the parents are absent, the chicks will vocalize to settle competitions over the next prey item to be delivered. Their predictions included: a nestling barn owl will not vocalize when there is a hungrier sibling, a nestling will increase

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