Small gull, sometimes in flocks of 30-40 in this area depending upon the state of the tide. See location notes.
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Hi Jonah, I'm no expert but I'll try to explain and I am open to correction. Neither name is incorrect but the latest scientific name for the Black-headed Gull is Chroicocephalus ridibundus. This is the name given by the RSPB but you will see Larus ridibundus as the iSpot default and in some books and guides.
As a rule I would always go for Chroicocephalus ridibundus on iSpot otherwise you will be corrected and lose the credit for your identification. There has been much debate about this recently and it is a current bone of contention. I hope that assists.
Chris Brooks - www.dragonfly-images.co.uk
My Flickr site - www.flickr.com/photos/ceb1298
Lat/Lng: 51.395, -3.504
OS grid ref: SS954672
The black-headed gulls and the herring gulls have distinct territories and times of the tide when each is dominant. The black-headed gulls appear to commute from this location to the Ogwr River eatuary six miles to the northwest.