an informal birding record | tarsiger.co.uk |
Finland |
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'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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