First Report of Olrog's Gull Depredation by Sympatric Kelp Gulls

Luciano La Sala; Sergio Martorelli

doi:10.1676/09-046.1

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Luciano La Sala,^1,* Sergio Martorelli¹

¹1Centro de Estudios Parasitológicos y Vectores (CONICET–UNLP), Calle 2 N° 584 CEPAVE, 1900 La Plata,

^*Corresponding author: lucianolasala@yahoo.com.ar

Abstract

We observed adult Kelp Gulls (Larus dominicanus) capture and eat Olrog's Gull (L. atlanticus) chicks in the Bahía Blanca estuary, Argentina. This estuary holds the largest breeding colony of Olrog's Gulls. There are no previously published reports of Kelp Gulls capturing and eating Olrog's Gull chicks. Our data support suggestions made by other authors about the possible existence of conflicts in colonies where both species breed in close proximity.

Citation Download Citation

Luciano La Sala and Sergio Martorelli "First Report of Olrog's Gull Depredation by Sympatric Kelp Gulls," The Wilson Journal of Ornithology 122(1), 188-189, (1 March 2010). https://doi.org/10.1676/09-046.1

Received: 13 March 2009; Accepted: 1 October 2009; Published: 1 March 2010

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