Colombian Grebe

The decline of the Colombian grebe is attributed to wetland drainage, siltation, pesticide pollution, disruption by reed harvesting, hunting, competition, and predation of chicks by rainbow trout . The primary reason was loss of habitat: drainage of wetlands and siltation resulted in higher concentrations of pollutant, caussing across Lake Tota. This destroyed the open, submergent pondweed vegetation and resulted in the formation of a dense monoculture of water weed .

The Colombian Grebe is classified as Extinct (EX), there is no reasonable doubt that the last individual has died.

The Colombian Grebe (Podiceps andinus), was a grebe (aquatic bird) found in the Bogotá wetlands in the Eastern Andes of Colombia. The species was still abundant on Lake Tota (3000m) in 1945. The species has occasionally been considered a subspecies of Black-necked Grebe (P. nigricollis). The decline of the Colombian grebe is attributed to wetland drainage, siltation, pesticide pollution, disruption by reed harvesting, hunting, competition, and predation of chicks by rainbow trout (Salmo gairdneri) (del Hoyo et al. 1992). More

The Colombian Grebe had a chestnut foreneck and upper breast and a dark-golden auricular fan. Range & Habitat This grebe was restricted to the Bogotá wetlands at about 2,600 m in the Eastern Andes of Colombia (Fjeldså 1993). Image: a map of a part of South America with the previous range (in red) of the Colombian Grebe. More

Grebe) • Black-necked Grebe (or Eared Grebe) • Colombian Grebe • Great Grebe • Silvery Grebe • Junin Flightless Grebe • Hooded Grebe Aechmophorus Western Grebe • Clark's Grebe v • d • e Birds (class: Aves) Anatomy Bird anatomy • Flight • Eggs • Feathers • Plumage • Beak • Vision • Dactyly • Preen gland Behaviour Singing • Intelligence • Migration • Incubation • Brood parasites • Nesting • Hybrids More

Colombian Grebe (Podiceps andinus), was a grebe found in the Bogotá wetlands in the Eastern Andes of Colombia. The species was still abundant on Lake Tota in 1945. More

Guatemala, and the Colombian Grebe Podiceps andinus of Lake Tota, Colombia. Another 3 are considered threatened: the Madagascar Grebe Tachybaptus pelzelnii, Rusty "Aloatra" Grebe Tachybaptus rufolavatus, and the Junin Flightless Grebe Podiceps taczanowskii. Grebes are found on every continent, except Antarctica. Like the similar looking loons, they are very much at home in the water, but appear very awkward when rarely seen on land. Tachybaptus There are 4 species within this genus. More

The Colombian grebe was an aquatic bird native to the Bogota wetlands in Colombia. The population of these subspecies of grebe was largely hit by loss of habitat and predation. Wetland drainage, siltation and reed harvest led to destruction of Colombian grebe habitat to a great extent. More importantly, predation by rainbow trouts and hunting by humans curbed the growth of grebe population in this area, with only 300 individuals surviving by 1968. More

Grebe) • Black-necked Grebe (or Eared Grebe) • Colombian Grebe • Great Grebe • Silvery Grebe • Junin Flightless Grebe • Hooded Grebe Aechmophorus Western Grebe • Clark's Grebe This entry is from Wikipedia, the leading user-contributed encyclopedia. More

Madagascar, Colombian Grebe of Lake Tota on the Colombia-Venezuela border and Atitlan Grebe of Guatemala) have already or soon will become extinct and others are critically endangered. - White-tufted Grebe (Rollandia rolland) * R. r. morrisoni - Central Peru * R. r. chilensis - southern South America (Chilean Grebe) * R. r. More

Colombian grebe, an aquatic bird endemic to the Bogota wetlands in Colombia, was driven to extinction due to loss of habitat and excessive predation in the second half of the 20th century. Heavy siltation of the Bogota wetlands which these birds inhabited along with excessive reed harvest in this region resulted in loss of habitat for this bird species. Large scale predation by Rainbow-trouts and hunting by humans reduced the population of Colombian grebe to less then a hundred individuals by 1970. More

Colombian Grebe ( Podiceps andinus) was a Grebe (aquatic bird found in the Bogotá wetlands in the Eastern Andes of Colombia. Also 1977 (album by Ash. Year 1977 ( MCMLXXVII) was a Common year starting on Saturday (link displays The Great Grebe ( Podiceps major) is the largest species of Grebe on earth UserPolbot. More