Caspian Gull

The Caspian gull is a large gull of the herring and lesser black-backed gull complex, 56–68 cm long with a wingspan of 137–155 cm and a weight of 680–1,590 g. It has a long, slender bill, accentuated by a sloping forehead, and its legs, wings and neck are longer than those of the herring gull and yellow-legged gull. The eye is small and often dark, the legs vary from pale pink to pale yellowish, the underparts are pale and the back greyish (Wikipedia, general species account).

It breeds around the Black and Caspian Seas and east across Central Asia to north-west China, and in Europe has been spreading north and west. It typically nests on flat, low-lying ground by water, unlike the yellow-legged gull, which mainly nests on cliffs where the two overlap. The cached account gives no detail specific to India. SoIB 2023 lists it as a winter migrant of wetland that eats vertebrates and carrion, and does not assign a priority category (Wikipedia, general species account; SoIB 2023).