Young gulls can be difficult to identify - they are nearly all white with brown flecks over much of their bodies. If you have one of each common species all together (unlikely) you can usually make an identification by size. I took into account the size of this young bird and, with other features concluded it is a 1st winter herring gull. It was standing on some rocks in the River Monnow at Monmouth, one of several youngsters more interested in being fed scraps by people on the bridge than scavenging in the shallows of the river.
photo © T. Boughen Camera: Nikon P900
