A range extension of GREAT BLACK-BACKED GULL that I was unaware of in Galicia Region..........
It's Cosme Damián Romai, from Galicia (NW Spain). In relation to breeding GBBG/KG in Morocco, I attach further information of breeding GBBG in Spain:
http://www.seo.org/media/docs/22gaviesc07.pdf
check pages 69-73 (in Spanish) and page 87 (English abstract).
More breeding evidence was noted in 2008 and 2009, with photos:
http://www.sgosgo.org/fotos.asp?id_fotos=1715 and http://www.sgosgo.org/fotos.asp?id_fotos=1716
Thus, breeding is confirmed in Galicia since 2006, with scattered pairs in the N of SW of the region.
Click also here:
http://www.seo.org/media/docs/Bol%20GIAM32_20092.pdf
page 10, breeding evidence in 2009 in Asturias.
Damián-- C D Romai Cousido, Meloxo, s/n 36980 O Grove (Galicia)