What special adaptations do sea gulls possess to prevent their legs from freezing in the icy waters?

Sea gulls have specialized adaptations in their legs to prevent freezing in icy waters, including a countercurrent heat exchange system. This allows warm blood from their bodies to warm the colder blood returning from their feet, reducing heat loss. Additionally, their legs have a network of blood vessels that helps minimize exposure to cold temperatures, and they possess a layer of insulating feathers on their bodies to maintain overall warmth. These adaptations enable them to thrive in cold coastal environments.