www.gull-research.org

Hi guys,
last Friday i found this first winter Gull (with polish color ring/yellow PKBC) on my local Gull spot.
I'm not sure whether this is a hybrid, as you can see several features speak for a Caspian Gull, but for me the markings on the head look quite strange for a pure CG.
What do you think?
Thanks Steve

hi steve,

nothing hybridish for me there. looks perfect for female type caspian.
some ind. just do have stronger head striation than might be expected for a cach. these striations are aquired like in the other taxa with postjuvenile moult.

this is mid september but note how many of the 51 pics here have stronger striation on head:
http://chrisgibbins-gullsbirds.blogspot ... e-not.html

this darkish is also from september: http://lou.bertalan.de/gulls/pic/vh/up_0561.jpg

lou

...nothing hybridish for me there. looks perfect for female type caspian.
some ind. just do have stronger head striation than might be expected for a cach.

I agree with you, Lou.