Great Black-backed Gull - underwings continued

Tuesday, 4th June 2013

Now we move on to the underwings of a 3CYear Great Black-backed Gull. The bird's age is estimated from this view by it's bill colouration and dark feathering in the tail. It also shows relatively little white in primaries 10 and 9 compared to the adult illustrated here yesterday.

3rd calendar year Great Black-backed Gull - Grove Point, Portland - 3rd June 2013

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