So I’m confused by this gull. I thought it was a Lesser Black Backed Gull, but the legs aren’t yellow. I don’t think it’s a Herring Gull because the back is too dark, but it didn’t seem big enough for a Greater Black Backed Gull, and I’ve also never noticed one of them in Glasgow before. Any ideas?

Identified by the other birders present as Mealy (Common) Redpoll. Bird slightly larger and greyer in colouration. Lower bird is Lesser Redpoll.

There is evidence/debate about whether the 4 species of Redpoll are (based on their DNA) just one species. here is a Youtube vid explaining: - https://www.youtube.com/watch?v=zgrq1Fglk1k