Living on the edge: Demography of the slender billed gull in the Western Mediterranean.

Sanz-Aguilar A., Tavecchia G., Afán I, Ramírez F., Doxa A., Bertolero A., Forero M.G., Oro D. 2014. Living on the edge: Demography of the slender billed gull in the Western Mediterranean. PLoS ONE, 9, doi:10.1371/journal.pone.0092674.