HONOLULU (AP) - Wildlife officials are starting a campaign to save the endangered Hawaiian duck, or koloa.
The chocolate brown koloa maoli is an endangered species largely due to cross-breeding with the introduced common mallard duck.
The Honolulu Star-Advertiser reports scientists believe there are fewer than 3,000 true koloa remaining in the wild.
The duck has been in the Hawaiian Islands for at least 100,000 years. Cross-breeding with mallards began sometime in the late 1800s when the more common mallard was imported for ornamental ponds, hunting and farming.
The U.S. Fish and Wildlife Service recommends removing feral mallard ducks to help prevent the koloa from becoming extinct.
The federal agency, the Department of Land and Natural Resources and the University of Hawaii want to raise awareness about koloa.