(last update: October 10, 2012)
Short index:
Herring Gulls
Yellow-legged Gulls
Lesser Black-backed Gulls
Great Black-backed Gulls
Post-juvenile moult in: tt1-2, gc2-4, mc1-11, llc1,4,6, lc1-25%(12x). US 1-25% 3g, rest US 2g, LS100% 2g.