Tachybaptus rufolavatus
The Alaotra Grebe, *Tachybaptus rufolavatus*, was a diminutive and distinct freshwater diving bird, tragically declared extinct in 2010. Averaging about 25 cm in length and weighing around 130 grams, it possessed a dark, slate-grey to blackish plumage on its upperparts, contrasting with striking rufous-chestnut flanks and a white belly. Its most distinctive field marks included a pale yellow gape, a slender black bill, and a dark cap extending down to the eye, giving way to a paler face and t...
This grebe was exclusively found in freshwater lakes, particularly favoring areas with dense beds of emergent vegetation and reeds along the margins, providing both cover and foraging opportunities.
Its diet consisted primarily of aquatic insects, their larvae, and small fish, which it expertly captured through underwater pursuit and diving.
Formerly, the Alaotra Grebe was a diurnal and highly aquatic species, spending most of its time diving for food or swimming on the surface. Foraging involved agile underwater pursuit, often remaining submerged for considerable periods. While detailed observations of its social structure were scar...
The Alaotra Grebe possessed an extraordinarily restricted geographic range, being found exclusively on Lake Alaotra in the eastern central highlands of Madagascar. This vast, shallow freshwater lake and its associated marshes and reedbeds represented its entire known habitat. There were no record...
Extinct
- The Alaotra Grebe was endemic to a single body of water, Lake Alaotra in eastern Madagascar, making its range one of the most restricted of any bird species. - It was declared extinct by the IUCN in 2010, with the last confirmed sighting occurring in 1985. - A major factor in its extinction was...