The giant ibis is a waterbird in the family Threskiornithidae. It is native to Cambodia, Lao People’s Democratic Republic (hereafter, Lao PDR), and Vietnam. Adults stand approximately 3 ft (1 m) tall, and have dark grey-brown plumage, with a dark hindcrown and nape. Wing-coverts are pale gray, with darker tips. They have light red legs, a long downward curving bill, and red eyes. Juveniles have short, black feathers on their hindcrown and hindneck, a shorter bill, and brown eyes (BLI 2007h).