an informal birding record
tarsiger.co.uk
 
Leucistic Herring Gull
 

Larus argentatus argentatus/argenteus?

Above: Uncertain age (Essex, 13 February 2010)

Very possibly the same individual as that seen later this year in August at the same site. Note the immature-looking bill colouration and black primary(ies?).

 

 

 

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