The IFAW investigation focused on species that are in immediate danger of extinction, whose sales are banned under the Convention on International Trade in Endangered Species (CITES). The off-limits bird species include yellow-headed Amazon parrots, Goffin's cockatoos, and scarlet macaws, all of which were openly offered for sale on websites around the world; some of these birds can fetch more than $1,000 each. Sales of threatened birds comprised about 20 percent of all online endangered species sales that IFAW tracked.