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CALIFORNIA LEAST TERN CHICK PREDATION BY GREATER ROADRUNNER

Abstract We present the first documented account of adult greater roadrunner (Geococcyx californianus) feeding on California least tern chicks (Sterna antillarum browni). This predation event occurred at a designated nesting site within Batiquitos Lagoon, San Diego County, California, in 1996. We hypothesize that the concentrated foraging efforts by the roadrunner were an opportunistic response to a localized abundance of favorable prey items, which warrants an increased awareness at other least tern nesting sites situated in close proximity to greater roadrunner habitat.