White-winged coot

The white-winged coot ("Fulica leucoptera") is a species of bird in the family Rallidae. At in length, it is a mid-sized coot. It is found in swamps and at lakes in southern South America, including the Falkland Islands, ranging as far north as Bolivia and southern Brazil. Despite its name, most of its wings are dark slaty, though in flight a white trailing edge is visible on the secondaries.