Otters are carnivorous and primarily eat fish, crustaceans, and mollusks, but they may eat birds opportunistically:
Waterfowl: Ducks, geese, and occasionally small swans.
Shorebirds: Sandpipers, plovers, and gulls.
Nestlings and eggs: Otters may raid nests for eggs and chicks.
Birds are not a significant part of their diet, as otters focus mainly on aquatic prey.