Black-headed Gull
(Chroicocephalus ridibundus)

If you want to see each of the enlarge photographs, clck on it.

Juvenil (Euring 3)

Chroicocephalus ridibundus - Juvenil (Euring 3) - Carnac (Bretagne) France - July 2009 - Author: Asier Aldalur	Chroicocephalus ridibundus - Juvenil (Euring 3) - Carnac (Bretagne) France - July 2009 - Author: Asier Aldalur
Chroicocephalus ridibundus - Juvenil (Euring 3) - Carnac (Bretagne) France - July 2009 - Author: Asier Aldalur	Chroicocephalus ridibundus - Juvenil (Euring 3) - Carnac (Bretagne) France - July 2009 - Author: Asier Aldalur
Chroicocephalus ridibundus - Juvenil (Euring 3) - Carnac (Bretagne) France - July 2009 - Author: Asier Aldalur	Chroicocephalus ridibundus - Juvenil (Euring 3) - Madrid (Madrid) - July 2009 - Author: Delfín González

1º winter (Euring 3/5)

Chroicocephalus ridibundus - 1º winter (Euring 3) - Zumaia (Gipuzkoa) - November 2007 - Author: Asier Aldalur	Chroicocephalus ridibundus - 1º winter (Euring 3) - Zumaia (Gipuzkoa) - November 2007 - Author: Asier Aldalur
Chroicocephalus ridibundus - 1º winter (Euring 3) - Zumaia (Gipuzkoa) - December 2009 - Author: Asier Aldalur	Chroicocephalus ridibundus - 1º winter (Euring 5) - Ondarroa (Bizkaia) - February 2010 - Author: Asier Aldalur
Chroicocephalus ridibundus - 1º winter (Euring 5) - Zumaia (Gipuzkoa) - December 2009 - Author: Asier Aldalur	Chroicocephalus ridibundus - 1º winter (Euring 5) - Ondarroa (Bizkaia) - February 2010 - Author: Asier Aldalur
Chroicocephalus ridibundus - 1º winter (Euring 5) - Zumaia (Gipuzkoa) - December 2009 - Author: Asier Aldalur	Chroicocephalus ridibundus - 1º winter (Euring 5) - Ondarroa (Bizkaia) - February 2010 - Author: Asier Aldalur

1º summer (Euring 5)

Chroicocephalus ridibundus - 1º summer (Euring 5) - Hossegor (France) - March 2010 - Author: Asier Aldalur	Chroicocephalus ridibundus - 1º summer (Euring 5) - Edinburgh (Scotland) - July 2010 - Author: Asier Aldalur
Chroicocephalus ridibundus - 1º summer (Euring 5) - Edinburgh (Scotland) - July 2010 - Author: Asier Aldalur	Chroicocephalus ridibundus - 1º summer (Euring 5) - Edinburgh (Scotland) - July 2010 - Author: Asier Aldalur
Chroicocephalus ridibundus - 1º summer (Euring 5) - Edinburgh (Scotland) - July 2010 - Author: Asier Aldalur	Chroicocephalus ridibundus - 1º summer (Euring 5) - Edinburgh (Scotland) - July 2010 - Author: Asier Aldalur
Chroicocephalus ridibundus - 1º summer (Euring 5) - Edinburgh (Scotland) - July 2010 - Author: Asier Aldalur	Chroicocephalus ridibundus - 1º summer (Euring 5) - Edinburgh (Scotland) - July 2010 - Author: Asier Aldalur
Chroicocephalus ridibundus - 1º summer (Euring 5) - Edinburgh (Scotland) - July 2010 - Author: Asier Aldalur	Chroicocephalus ridibundus - 1º summer (Euring 5) - Edinburgh (Scotland) - July 2010 - Author: Asier Aldalur
Chroicocephalus ridibundus - 1º summer (Euring 5) - Edinburgh (Scotland) - July 2010 - Author: Asier Aldalur	Chroicocephalus ridibundus - 1º summer (Euring 5) - Edinburgh (Scotland) - July 2010 - Author: Asier Aldalur
Chroicocephalus ridibundus - 1º summer (Euring 5) - Edinburgh (Scotland) - July 2010 - Author: Asier Aldalur	Chroicocephalus ridibundus - 1º summer (Euring 5) - Edinburgh (Scotland) - July 2010 - Author: Asier Aldalur
Chroicocephalus ridibundus - 1º summer (Euring 5) - Edinburgh (Scotland) - July 2010 - Author: Asier Aldalur

Adult winter (Euring 4/6)

Chroicocephalus ridibundus - Adult winter (Euring A) - Ondarroa (Bizkaia) - January 2010 - Author: Asier Aldalur	Chroicocephalus ridibundus - Adult winter (Euring A) - Ondarroa (Bizkaia) - January 2010 - Author: Asier Aldalur
Chroicocephalus ridibundus - Adult winter (Euring A) - Ondarroa (Bizkaia) - January 2010 - Author: Asier Aldalur	Chroicocephalus ridibundus - Adult winter (Euring A) - Ondarroa (Bizkaia) - January 2010 - Author: Asier Aldalur
Chroicocephalus ridibundus - Adult winter (Euring A) - Hossegor (France) - February 2010 - Author: Asier Aldalur	Chroicocephalus ridibundus - Adult winter (Euring A) - Hossegor (France) - February 2010 - Author: Asier Aldalur
Chroicocephalus ridibundus - Adult winter (Euring A) - Orio (Gipuzkoa) - February 2010 - Author: Asier Aldalur	Chroicocephalus ridibundus - Adult winter (Euring A) - Orio (Gipuzkoa) - February 2010 - Author: Asier Aldalur
Chroicocephalus ridibundus - Adult winter (Euring A) - Zumaia (Gipuzkoa) - February 2010 - Author: Asier Aldalur	Chroicocephalus ridibundus - Adult winter (Euring A) - Hossegor (France) - February 2010 - Author: Asier Aldalur
Chroicocephalus ridibundus - Adult winter (Euring 4) in front of one 1º winter - Madrid (Madrid) - December 2008 - Author: Delfín González	Chroicocephalus ridibundus - Adult winter (Euring 6) - Madrid (Madrid) - January 2011 - Author: Delfín González
Chroicocephalus ridibundus - Adult winter (Euring 6) - Madrid (Madrid) - January 2011 - Author: Delfín González	Chroicocephalus ridibundus - Adult winter (Euring 6) - Madrid (Madrid) - December 2009 - Author: Delfín González
Chroicocephalus ridibundus - Adult winter (Euring 4) moulting to summer feathers - Madrid (Madrid) - November 2011 - Author: Delfín González	Chroicocephalus ridibundus - Adult winter (Euring 4) moulting to summer feathers - Madrid (Madrid) - October 2011 - Author: Delfín González

Adult summer (Euring 6)

Chroicocephalus ridibundus - Adult summer (Euring A) - Edinburgh (Scotland) - June 2010 - Author: Asier Aldalur	Chroicocephalus ridibundus - Adult summer (Euring A) - Edinburgh (Scotland) - June 2010 - Author: Asier Aldalur
Chroicocephalus ridibundus - Adult summer (Euring A) - Edinburgh (Scotland) - June 2010 - Author: Asier Aldalur	Chroicocephalus ridibundus - Adult summer (Euring A) - Edinburgh (Scotland) - June 2010 - Author: Asier Aldalur
Chroicocephalus ridibundus - Adult summer (Euring A) - Edinburgh (Scotland) - June 2010 - Author: Asier Aldalur	Chroicocephalus ridibundus - Adult summer (Euring A) - Edinburgh (Scotland) - June 2010 - Author: Asier Aldalur
Chroicocephalus ridibundus - Adult summer (Euring A) - Edinburgh (Scotland) - June 2010 - Author: Asier Aldalur	Chroicocephalus ridibundus - Adult summer (Euring A) - Edinburgh (Scotland) - June 2010 - Author: Asier Aldalur
Chroicocephalus ridibundus - Adult summer (Euring A) - Edinburgh (Scotland) - June 2010 - Author: Asier Aldalur	Chroicocephalus ridibundus - Adult summer (Euring A) - Edinburgh (Scotland) - June 2010 - Author: Asier Aldalur
Chroicocephalus ridibundus - Adult summer (Euring A) - Edinburgh (Scotland) - June 2010 - Author: Asier Aldalur	Chroicocephalus ridibundus - Adult summer (Euring A) - Edinburgh (Scotland) - June 2010 - Author: Asier Aldalur
Chroicocephalus ridibundus - Adult summer (Euring A) - Edinburgh (Scotland) - June 2010 - Author: Asier Aldalur	Chroicocephalus ridibundus - Adult summer (Euring A) - Edinburgh (Scotland) - June 2010 - Author: Asier Aldalur
Chroicocephalus ridibundus - Adult summer (Euring A) - Edinburgh (Scotland) - June 2010 - Author: Asier Aldalur	Chroicocephalus ridibundus - Adult summer (Euring A) - Edinburgh (Scotland) - June 2010 - Author: Asier Aldalur
Chroicocephalus ridibundus - Adult summer (Euring A) - Edinburgh (Scotland) - June 2010 - Author: Asier Aldalur	Chroicocephalus ridibundus - Adult summer (Euring A) - Edinburgh (Scotland) - June 2010 - Author: Asier Aldalur
Chroicocephalus ridibundus - Adult summer (Euring A) - Edinburgh (Scotland) - June 2010 - Author: Asier Aldalur	Chroicocephalus ridibundus - Adult summer (Euring A) - Edinburgh (Scotland) - June 2010 - Author: Asier Aldalur
Chroicocephalus ridibundus - Adult summer (Euring A) - Edinburgh (Scotland) - June 2010 - Author: Asier Aldalur	Chroicocephalus ridibundus - Adult summer (Euring A) - Edinburgh (Scotland) - June 2010 - Author: Asier Aldalur
Chroicocephalus ridibundus - Adult summer (Euring A) - Edinburgh (Scotland) - June 2010 - Author: Asier Aldalur	Chroicocephalus ridibundus - Adult summer (Euring A) - Edinburgh (Scotland) - June 2010 - Author: Asier Aldalur
Chroicocephalus ridibundus - Adult summer (Euring A) - Edinburgh (Scotland) - June 2010 - Author: Asier Aldalur	Chroicocephalus ridibundus - Adult summer (Euring A) - Edinburgh (Scotland) - June 2010 - Author: Asier Aldalur
Chroicocephalus ridibundus - Adult summer (Euring A) - Edinburgh (Scotland) - June 2010 - Author: Asier Aldalur	Chroicocephalus ridibundus - Adult summer (Euring A) - Edinburgh (Scotland) - June 2010 - Author: Asier Aldalur
Chroicocephalus ridibundus - Adult summer (Euring A) - Edinburgh (Scotland) - June 2010 - Author: Asier Aldalur	Chroicocephalus ridibundus - Adult summer (Euring A) - Hossegor (France) - March 2010 - Author: Asier Aldalur
Chroicocephalus ridibundus - Adult summer (Euring A) - Hossegor (France) - March 2010 - Author: Asier Aldalur	Chroicocephalus ridibundus - Adult summer (Euring A) - Hossegor (France) - March 2010 - Author: Asier Aldalur
Chroicocephalus ridibundus - Adult summer (Euring A) - Hossegor (France) - March 2010 - Author: Asier Aldalur	Chroicocephalus ridibundus - Adult summer (Euring A) - Hossegor (France) - March 2010 - Author: Asier Aldalur
Chroicocephalus ridibundus - Adult summer (Euring A) - Hossegor (France) - March 2010 - Author: Asier Aldalur	Chroicocephalus ridibundus - Adult summer (Euring A) - Hossegor (France) - March 2010 - Author: Asier Aldalur
Chroicocephalus ridibundus - Adult summer (Euring A) - Hossegor (France) - March 2010 - Author: Asier Aldalur	Chroicocephalus ridibundus - Adult summer (Euring A) - Hossegor (France) - March 2010 - Author: Asier Aldalur
Chroicocephalus ridibundus - Adult summer (Euring A) - Hossegor (France) - March 2010 - Author: Asier Aldalur	Chroicocephalus ridibundus - Adult summer (Euring A) - Hossegor (France) - March 2010 - Author: Asier Aldalur
Chroicocephalus ridibundus - Adult summer (Euring A) - Hossegor (France) - March 2010 - Author: Asier Aldalur	Chroicocephalus ridibundus - Adult summer (Euring A) - Hossegor (France) - March 2010 - Author: Asier Aldalur
Chroicocephalus ridibundus - Adult summer (Euring A) - Hossegor (France) - March 2010 - Author: Asier Aldalur	Chroicocephalus ridibundus - Adult summer (Euring A) - Hossegor (France) - March 2010 - Author: Asier Aldalur
Chroicocephalus ridibundus - Adult summer (Euring A) - Hossegor (France) - March 2010 - Author: Asier Aldalur	Chroicocephalus ridibundus - Adult summer (Euring A) - Hossegor (France) - March 2010 - Author: Asier Aldalur
Chroicocephalus ridibundus - Adult summer (Euring A) - Hossegor (France) - March 2010 - Author: Asier Aldalur	Chroicocephalus ridibundus - Adult summer (Euring A) - Hossegor (France) - March 2010 - Author: Asier Aldalur
Chroicocephalus ridibundus - Adult summer (Euring A) - Hossegor (France) - March 2010 - Author: Asier Aldalur	Chroicocephalus ridibundus - Adult summer (Euring 6) - Madrid (Madrid) - March 2006 - Author: Delfín González
Chroicocephalus ridibundus - Adult summer (Euring 6) - Madrid (Madrid) - March 2009 - Author: Delfín González	Chroicocephalus ridibundus - Adult summer (Euring 6) - Madrid (Madrid) - March 2010 - Author: Delfín González
Chroicocephalus ridibundus - Adult summer (Euring 6) - Madrid (Madrid) - March 2003 - Author: Delfín González	Chroicocephalus ridibundus - Adult summer (Euring 6) courtship dance - Madrid (Madrid) - March 2006 - Author: Delfín González

Aranzadi Society of Sciences - Aranzadi Ringing Office
Plaiaundi Ecological Park - Have you found a ringed bird?