Sloppy seconds

Another post-work trip to see the Sabine's resulted in rather good views. The bird would appear to be a second-summer (e.g. dull bill-tip and dull, imperfect hood) and is similar to the Farmoor bird pictured in plates 769 and 770 in Gulls of Europe, Asia and North America (Malling Olsen & Larsson 2003).