Nice photo. Where is the photo taken? I'm trying to ID the gull to species. Also consider using #birding for birding/ bird watching related posts and also follow @birdersofsteem a site where birders can find birding related content and support each other. Good birding.
The photo was taken at the recreation park in the city of Irkutsk.
I thought it was a Black-headed Gull, and it almost certainly is, as it is the most likely "black-headed" gull in that area and nothing a bout it makes me think it is anything else. Thanks.