White Ibis

With long red legs, all white plumage, red face, and long decurved red bill, an adult White Ibis in breeding plumage is easily identified. Black wing tips are especially evident in flight. In flight, the outstretched wings measure three feet across, and have small yet obvious patches of black at the tips. Adults stand about two feet tall, and weigh about two pounds. Juvenile birds are dark overall. They become increasingly pale over the first year or so, molting into white adult plumage by early in their second year. The bill, face, and legs of young birds change similarly, from dark, to orange, to the red of adulthood.

http://birds.audubon.org/species/whiibi