Which juvenile gull? (Don't all answer at once!)

After peering at pictures in my newly acquired book Gulls of the World I'm inclined to think that this beautifully marked young bird is a lesser black-back:

All input very gratefully received!

  • Gulls - especially young gulls - are spectacularly underrated when it comes to attractiveness. I wish more people would stop and think about that. I think it's shocking that the UK has only one gull on the green list (the little gull) - almost all of the others are amber listed, with the herring gull and kittiwake on the red list. How did we come to this?