The primary reason was loss of habitat: drainage of wetlands and siltation resulted in higher concentrations of pollutants, causing (eutrophication) across Lake Tota.
•
The species has occasionally been considered a subspecies of Black-necked Grebe (P. nigricollis).
Colombian | Little Grebe | Great Crested Grebe | Silvery Grebe | Colombian Massif | Colombian Party Cartel | Colombian peso | Colombian Conservative Party | Colombian Air Force | Black-necked Grebe | White-tufted Grebe | Western Grebe | South Colombian University | Great crested grebe | Colombian presidential election, 1934 | Colombian Constitution of 1991 | Colombian Communist Party | Colombian American |