A variety of bird species have been shown to derive protection from nest predators by nesting in association with more aggressive or predatory species. We provide the first evidence of this interaction for a hummingbird. Black-chinned Hummingbird (Archilochus alexandri) nests in southeast Arizona were found near the nests of two species of Accipiter raptors. Mayfield estimates of nest survival indicated nests within 300 m of active Accipiter nests have significantly higher probabilities (46 vs. 9%) of successfully fledging young.
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