I've been gulling quite bit recently checking the tip at Holme on Spalding Moor regularly, I'm struggling to find owt though, a single juv Glauc is the best I can manage. I was talking to a friend earlier about the Kumlien's at Barmston and the hybrid Gull seen recently in Kerry and it reminded me of a bird I saw at Killybegs about 6-7 years ago.
We'd gone over there hoping to see a Thayer's that had been around but dipped, from memory we saw a few white wingers but not much else. This bird stood out though initially it looked like a very dark Glauc but the primaries and tertials are clearly very dark and there are heavily patterned dark lower scaps present too. I sent the pics round a few knowledgeable people who all agreed with me that it looked like a good candidate for Nelson' Gull, or in normal speak a hybrid between Glauc and American Herring Gull. I'd have rather found a pukka Smith but it's still a clearly striking Gull.