Lake Alaotra, Madagascar.
Formerly included in genus Podiceps. Closest to T. ruficollis and T. novaehollandiae. Sometimes considered a race of former, with which intensive hybridization occurred. Monotypic.
Last confirmed sightings in 1982, when 12 seen on L Alaotra, and in 1985, when two individuals (in addition to several apparent hybrids) near Andreba, also on L Alaotra; individuals with some characteristics of the species seen on L Alaotra in 1986 and 1988#R. In survey in 1999 and visits in 2000, no individuals of any Tachybaptus species found on L Alaotra or surrounding lakes; recent visit to L Amparihinandriamabavy failed to find any grebes#R. Causes of extinction probably several, especially introduction of carnivorous fish, habitat degradation (including reduction in water quality through soil erosion on banks), introduction of exotic biota (plants, mammals and fish), hybridization with T. ruficollis, and poaching.
Food and feeding
Status and conservation
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