The term 'long-legged wading birds' refers to two species of birds, avocets and stilts. Avocets are large shorebirds with long, thin legs and a distinctive upturned bill. They are found in wetlands and shallow lakes throughout the world. Stilts are also long-legged wading birds, but they have a more slender body and longer legs than avocets. They are found in wetlands, shallow lakes, and estuaries in many parts of the world. Both species of birds feed on small aquatic invertebrates and fish.