Caught up with the Ring-billed Gull at Mirfield. A lifer for me and a superb bird. It obligingly sat on an island in the middle of a gravel pit for me to make quick sketches. Freezing cold but enjoyable. Wonder how an American Gull got over here?
The yellow iris was a clincher but the lighter mantle, white tertial tips, stouter and larger size than a Common Gull were noticeable. The bill was much heavier and the legs were yellow-green which ruled out Herring Gull.
