Ferrari et al., Magellanic Plovers Pluvianellus socialis in southern Santa Cruz Province, Argentina (original) (raw)
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We present results of targeted surveys and casual observations of the little-known Magellanic Plover Pluvianellus socialis in southern Santa Cruz Province, Argentina, during 1998-2002. Included are the first records of the species using the shores of rivers during the breeding season and observations of flocks of 123 and 145 on the Gallegos and Chico estuaries during the non breeding season. These probably represent he largest concentrations of the species ever recorded, and indicate the importance of these sites to the species' conservation.
Ornitologia Neotropical, 1998
información sobre la distribución y abundancia de aves marinas y costeras en el área de la Ría de Puerto Deseado y áreas aledañas. También se registró la abundancia relativa de las especies residentes no reproductivas, las migrantes y las que utilizan sus playas durante la dispersión invernal. Se identificaron dos áreas principales donde se localiza el mayor número de colonias reproductivas: 1) Las aguas interiores de la Ría Deseado, 2) Bahía Oso Marino. Un total de quince especies nidifican en este sector de costa: Pingüino de Magallanes (Spheniscus magellanicus), Pingüino de Penacho Amarillo (Eudyptes chrysocome chrysocome), Cormorán Imperial (Phalacrocorax atriceps), Cormorán de Cuello Negro (P. magellanicus), Bigua (P. brasilianus), Cromorán gris (P. gaimardi), Gaviota Cocinera (Larus dominicanus), Gaviota Austral (L. scoresbii), Gaviotines (Sterna hirundinacea and S. eurygnatha), Skua Chileno (Catharacta chilensis) y Skua Antártico (C. antarctica), Ostreros Negros (Haematopus ater), Garza Bruja (Nycticorax nycticorax), Pato Vapor Volador (Tachyeres patachonicus) y Pato Crestón (Anas specularoides). Los resultados mostraron que Puerto Deseado y zonas aledañas representan un área de gran importancia por su alta diversidad de aves marinas y costeras que interactúan directa o indirectamente con diversas actividades llevadas a cabo por el hombre como el turismo, la pesca y la contaminación Abstract. During the breeding seasons of 1986-1987, and from 1992 to 1995, we obtained information on the distribution and abundance of breeding seabirds and shorebirds of Puerto Deseado, Santa Cruz, Argentina, and the surrounding area. Also, we recorded relative abundance of resident species, migrant species, and birds using the beaches of Puerto Deseado during winter dispersion. We identified two main areas where seabird colonies were distributed: 1) interior waters of Ría Deseado, and 2) Bahía Oso Marino. We identified fifteen species breeding in both areas: Magellanic Penguin (Spheniscus magellanicus), Southern Rockhopper Penguin (Eudyptes chrysocome chrysocome), Imperial Shag (Phalacrocorax atriceps), Rock Shag (P. magellanicus), Neotropic Cormorant (P. brasilianus), Red-legged Cormorant (P. gaimardi), Kelp Gull (Larus dominicanus), Dolphin Gull (L. scoresbii), terns (Sterna hirundinacea and S. eurygnatha), Chilean Skuas (Catharacta chilensis), Antarctic Skua (C. antarctica), Blackish Oystercatcher (Haematopus ater), Black-crowned Night-Heron (Nycticorax nycticorax), Flying Steamer-Duck (Tachyeres patachonicus), and Crested Duck (Anas specularoides). Our results showed that Puerto Deseado and surrounding areas represent an important coastal zone with high bird diversity where seabirds and shorebirds interact directly or indirectly with diverse human activities such as tourism, fisheries and pollution.
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Ornitología Neotropical, 2007
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