I have read a few online comments about Caspian Gulls displacing Herring Gulls as the former spreads West and North. Caspian Gulls are on average larger? I would have thought the more Northern race of Herring Gull would be the largest in this bunch. Also the Caspian Gull beak looks longer but not as deep? On average Caspian Gulls do have longer legs it seems too.
I have always thought Yellow Legged Gulls appear larger too, on average. How do they compare diet wise?
I have always thought Yellow Legged Gulls appear larger too, on average. How do they compare diet wise?