Hallazgo de una nueva colonia de la Gaviota de Olrog (Larus atlanticus) en la ría de Bahía Blanca, Argentina

J. Kaspar V. Delhey; Pablo F. Petracci; Carlos M. Grassini

doi:10.56178/eh.v16i1.914

Short Communications Published 01 August 2001 https://doi.org/10.56178/eh.v16i1.914

A new colony of Olrog’s Gull (Larus atlanticus) in the Bahía Blanca estuary, Argentina

Argentina Bahía Blanca breeding colony conservation Larus atlanticus

J. Kaspar V. Delhey Quillén 75, 8000 Bahía Blanca, Buenos Aires, Argentina

Pablo F. Petracci Patricios 712, 8000 Bahía Blanca, Buenos Aires, Argentina

Carlos M. Grassini Cátedra de Biología General, Departamento de Biología, Bioquímica y Farmacia, San Juan 670, 8000 Bahía Blanca, Buenos Aires, Argentina

Abstract

A new colony of Olrog’s Gull (Larus atlanticus) was found on a small island in the Bahía Blanca estuary, near Ingeniero White Harbour. The total number of nests was 1635, distributed in 11 groups or sub-colonies ranging from 25 to 530 nests, inside a large Kelp Gull (Larus dominicanus) colony. This colony of Larus atlanticus is the largest reproductive group reported so far. The Bahía Blanca estuary area constitutes therefore the most important reproductive site of this vulnerable species, perhaps comprising more than 60% of the known reproductive population.

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References

BIRDLIFE INTERNATIONAL (2000) Threatened birds of the world. Lynx Edicions y Birdlife International, Barcelona y Cambridge.
BURGER J Y GOCHFELD M (1996) Family Laridae (gulls). Pp. 572–623 en: DEL HOYO J, ELLIOTT A Y SARGATAL J (eds) Handbook of the birds of the world. Volume 3. Lynx Edicions, Barcelona.
CABRERA AL (1971) Fitogeografía de la República Argentina. Boletín de la Sociedad Argentina de Botánica 14:1–42.
CABRERA AL (1976) Regiones Fitogeográficas argentinas. Pp. 1–85 en: Enciclopedia argentina de agricultura y jardinería. Tomo II. Fascículo 1. Acme, Buenos Aires.
COLLAR NJ Y ANDREW P (1988) Birds to watch. The ICBP world checklist of threatened birds. ICBP Technical Publication 8, Cambridge.
DELHEY JKV, CARRETE M Y MARTÍNEZ MM (2001) Diet and feeding behavior of Olrog ́s gull Larus atlanticus in Bahía Blanca, Argentina. Ardea 89:319-329.
DEVILLERS P (1977) Observations at a breeding colony of Larus (belcheri) atlanticus. Gerfaut 67:22–43.
MARTÍNEZ MM, ISACCH JP Y ROJAS M (2000) Olrog ́Gull Larus atlanticus: specialist or generalist? Bird Conservation International 10:89–92.
YORIO PM, PUNTA G, RABANO D, RABUFFETTI FL, HERRERA G, SARAVIA J Y FRIEDRICH P (1997) Newly discovered breeding sites of Olrog’s Gull Larus atlanticus in Argentina. Bird Conservation International 7:161–165.

How to cite

J. Kaspar V. Delhey, Pablo F. Petracci, Carlos M. Grassini (2001). A new colony of Olrog’s Gull (Larus atlanticus) in the Bahía Blanca estuary, Argentina. El Hornero, Vol. 16 No. 1 (2001), 39-42. https://doi.org/10.56178/eh.v16i1.914

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[1] BIRDLIFE INTERNATIONAL (2000) Threatened birds of the world. Lynx Edicions y Birdlife International, Barcelona y Cambridge.

[2] BURGER J Y GOCHFELD M (1996) Family Laridae (gulls). Pp. 572–623 en: DEL HOYO J, ELLIOTT A Y SARGATAL J (eds) Handbook of the birds of the world. Volume 3. Lynx Edicions, Barcelona.

[3] CABRERA AL (1971) Fitogeografía de la República Argentina. Boletín de la Sociedad Argentina de Botánica 14:1–42.

[4] CABRERA AL (1976) Regiones Fitogeográficas argentinas. Pp. 1–85 en: Enciclopedia argentina de agricultura y jardinería. Tomo II. Fascículo 1. Acme, Buenos Aires.

[5] COLLAR NJ Y ANDREW P (1988) Birds to watch. The ICBP world checklist of threatened birds. ICBP Technical Publication 8, Cambridge.

[6] DELHEY JKV, CARRETE M Y MARTÍNEZ MM (2001) Diet and feeding behavior of Olrog ́s gull Larus atlanticus in Bahía Blanca, Argentina. Ardea 89:319-329.

[7] DEVILLERS P (1977) Observations at a breeding colony of Larus (belcheri) atlanticus. Gerfaut 67:22–43.

[8] MARTÍNEZ MM, ISACCH JP Y ROJAS M (2000) Olrog ́Gull Larus atlanticus: specialist or generalist? Bird Conservation International 10:89–92.

[9] YORIO PM, PUNTA G, RABANO D, RABUFFETTI FL, HERRERA G, SARAVIA J Y FRIEDRICH P (1997) Newly discovered breeding sites of Olrog’s Gull Larus atlanticus in Argentina. Bird Conservation International 7:161–165.