an informal birding record
tarsiger.co.uk
 
Finland
 

'Omissus' Gull

Above: Oulu (April 2008)

It's worth stating that the once 'pure' Baltic population known as 'omissus' has probably been extirpated through mixing with the expanding populations of pink-legged argentatus. Thus the birds shown here probably represent an impure variant arising from the now mixed gene pool.

 

 

 

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