|2cy presumed Viking Gull (Glauc x Herring) 18 Jan 2014; complete with eyelids, hoary tertials and coverts.|
|1st-winter Great Black-backed Gull 18 Jan 2014|
|1st-winter Caspian Gull 18 Jan 2014|
Added to this were two Yellow-legged Gulls (an adult and 3rd-winter) and two adult Mediterranean Gulls. I'd been lucky to be with the NTGG when they ringed the 3rd-winter bird (as a second-winter) 15 months ago; amazing how much maturity of bare parts and moult happens in such a short space of time.
|3rd-winter Yellow-legged Gull 'YJ6T' 18 Jan 2014 (top) and the same bird when ringed by the North Thames Gull Group at the same site in October 2012 - what a difference 15 months makes both moult and bare part wise.|