Caspian or a hybrid?
Posted: Sun Feb 02, 2014 9:56 pm
I thought that can be a Caspian Gull, but some Spanish colleagues have different opinion, and think that can be a hybrid.
Delfín
Delfín
Gull Research Organisation - Forum
https://www.talk.gull-research.org/
https://www.talk.gull-research.org/viewtopic.php?f=13&t=1016