Hello, Chris.
Many thanks for the letter. Indeed, one can not exclude the fact that the male of a hybrid pair can itself be a hybrid. Analysis of photos taken in the colony of gulls in Gatovo shows the presence of birds with signs of cachinnans and argentatus and also hybrid individuals.
All the best,
Dmitry
Second successful nesting of the LBBG in Belarus
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Re: Second successful nesting of the LBBG in Belarus
Last bumped by Dmitry Goncharov on Fri Nov 25, 2016 8:22 pm.