This afternoon I took a trip over to Priorslee lake Shropshire to see the adult Ring Billed Gull that had been reported the day before. On arrival the bird was showing well in the water and perched on the ice.
What was immediately obvious was that the mantle shade appeared too dark, being a similar shade to Common Gull or Yellow-legged Gull. The bird appeared on the large side and wasn't much smaller than the surrounding LBB Gulls. The bill, iris and leg colour all fit in with Ring Billed Gull. Also the primary pattern all looked ok for Ring Billed Gull.
We all seemed to think the bird was a hybrid Ring Billed Gull type, possibly with LBBGull.
I would appreciate some feed back on this very interesting Gull.