This note describes interactions between four bird species during a predation attempt by Yellow-footed Gull (Larus livens) on an Eared Grebe (Podiceps nigricollis).The interactions among species were documented on video in a mangrove (Rhizophora mangle and Avicennia germinans) area of the Ensenada La Paz (a RAMSAR site) during winter in the southwest Gulf of California, Mexico on 2 February 2019. This is the first report that has documented an effective killing attempt in the Baja California Peninsula and the second in northwestern Mexico of Yellow-footed Gull predation on Eared Grebe. Additionally, kleptoparasitism attempts against the Yellow-footed Gull by a Great Blue Heron (Ardea herodias) and Turkey Vulture (Cathartes aura) are described and suggest that those species may include prey stolen from gulls (family Laridae) more regularly than presently known based on this opportune observation.
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15 September 2020
Interspecific Predatory Waterbird Interactions at a RAMSAR Site
Christian J. Salvadeo
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Waterbirds
Vol. 43 • No. 3-4
September 2020
Vol. 43 • No. 3-4
September 2020
competition
Eared Grebe
Great Blue Heron
Gulf of California
kleptoparasitism
predation
Turkey Vulture