sungrebe

The sungrebe, scientific name Podilymbus gigas, was a species of flightless grebe endemic to Lake Atitlán in Guatemala. It was a large grebe, weighing up to 1.8 kg (4 lb) and measuring up to 48 cm (19 in) in length. Its plumage was dark brown or black with a distinctive white bill and a white eye ring. The sungrebe was a diving bird, feeding primarily on fish and crustaceans. It was known for its shy and reclusive nature, preferring to stay near the dense aquatic vegetation at the lake's edge.

The species was first described in 1926 by American ornithologist Ludlow Griscom. For many years, it was thought to be a subspecies of the pied-billed grebe, but genetic and morphological differences led to its classification as a distinct species. The sungrebe's population declined dramatically in the mid-20th century due to a combination of factors. Predation by introduced fish like largemouth bass and rainbow trout, habitat destruction, and overhunting for its feathers and meat all contributed to its downfall.

A major blow to the sungrebe population occurred in 1976 when a strong earthquake caused the water level of Lake Atitlán to drop significantly, destroying much of its shallow-water nesting habitat. Despite conservation efforts, including the establishment of a protected area and attempts to breed the birds in captivity, the sungrebe failed to recover. The last confirmed sighting of a sungrebe was in 1986, and the species was declared extinct in 2010 by the International Union for Conservation of Nature (IUCN). Its extinction serves as a stark reminder of the vulnerability of specialized island or lake-bound species to human-induced pressures and environmental changes.