Dříve se tito rackové jmenovali jednoduše Racek stříbřitý ale jak věda pokročila tak z nich udělali tři druhy a od té doby je těžké se v nich vyznat. Tato fotografie je z vodního díla Gabčíkovo na Dunaji a racek je snad určen dobře. A kdyby ne tak je to prostě Racek stříbřitý.
In the past, these gulls were simply called the Herring Gull, but as science progressed, they made them three species, and since then it is difficult to know them. This photo is from the Gabčíkovo waterworks on the Danube and the seagull is perhaps well determined. And if not, it's just the Herring Gull.
https://www.inaturalist.org/observations/37532639
https://www.inaturalist.org/taxa/4389-Larus-cachinnans
11.1.2020 Danube, Slovakia