Population information

Order name Charadriiformes
Family name Laridae
Scientific name Larus atlanticus Common name Olrog's Gull
Population name SE S America
Breeding range Atlantic coast C & N Argentina Non-breeding range Atlantic coast S Brazil, Uruguay S to C Argentina
Red List Category Near Threatened
Ramsar regions Neotropics
Notes

Conservation Framework

Conservation framework Notes
No conservation frameworks
Note:

Population size

Publication Start year End year Minimum Maximum Estimate quality Notes References Actions
WPE 3 1999 1999 4,600 4,600 No quality assessment [R68]
WPE 4 0 0 10,500 10,500 No quality assessment [S2090] [R524]
WPE 1 0 0 3,500 3,500 No quality assessment [R722]
WPE 2 0 0 4,000 5,000 No quality assessment [R725]
WPE 5 2011 2011 10,400 10,400 Census based [R1198]

Population trends

Publication Start year End year Trend Trend quality Notes References Actions
WPE 3 1990 2000 DEC No quality assessment [R68]
WPE 4 1994 2004 STA No quality assessment [R724]
WPE 1 0 0 Unknown No quality assessment
WPE 2 0 0 Unknown No quality assessment
WPE 5 2001 2010 STA Reasonable [R724]

Population 1% level

Publication Yearset 1 percent Note
WPE 3 1997 45
WPE 4 2006 105
WPE 1 1994 35
WPE 2 1997 45
WPE 5 2012 100

References

  • R68 - BirdLife International. (2000). Threatened Birds of the World. Barcelona and Cambridge, UK: Lynx Edicions and BirdLife international
  • R524 - Petracci, P.F., L.F. La Sala, G. Aguerre, C.H.F. Perez, N. Acosta, M. Sotelo and C. Pamparana. 2004. Dieta de la Gaviota Cocinera (Larus dominicanus) durante el período reproductivo en el estuario de Bahía Blanca, Buenos Aires, Argentina. Hornero 1: 23-28.
  • R724 - Yorio, P.M. (In litt.). 2005.
  • R722 - Yorio, P.M. and Harris, G. 1993. Actualizacion de la distribution reproductiva, estado poblacional y de conservacion de la Gaviota de Orlog (Larus atlanticus). El Hornero 13: 200-202
  • R725 - Yorio, P.M. (pers comm.). 1996. Unpublished information from the Plan de Manejo Integrado de la Zona Costera Patagónica - FPN/PNUD/GEF.
  • R1198 - Yorio, P., Garc?a Borboroglu, P. and Petracci, P.F. 2012. Unpublished information on the Olrog's Gull (Larus atlanticus).

Notes

  • S2090 - 2,806 nests (8,418 individuals) in the Isla del Puerto colony in 2003 (Petracci et al. 2004). Yorio in litt. 2005 estimates 3,500 pairs in total (10,500 individuals).



Copyright Wetlands International 2012

Citation: Wetlands International (). "Waterbird Population Estimates" . Retrieved from wpe.wetlands.org on