The Wood Stork (Mycteria americana) is a large, bald-headed wading bird that stands more than 3 feet (0.9 meters) tall, has a 5 foot (1.5 meter) wing spread, and weighs 4 to 6 pounds (1.8 to 2.7 kg). It is the only stork breeding in the United States and was placed on the Federal Endangered Species list in 1984. The species was downlisted from endangered to threatened in June 2014, reflecting a successful conservation and recovery effort spanning three decades.