Progression of an individual Yellow-legged Gull from 2W (3cy) to Adult

© A. R. Dean

Images 34 &35.  4cy.  Early December 2011.

(Image 1 in the series is at 20/01/2010).

Primary pattern as full adult: note extensive black at base of p8 to p10, lozenge-shaped white mirror on p10, very small white mirror on p9 and black band across p5. Legs and base of bill with rather 'washed out' yellow hue, both less colourful than during previous summer.