Overview
The Madagascar Pochard (Aythya innotata), known locally as the ‘Fotsy Maso’ (White Eye), is the rarest duck in the world. Declared completely extinct in the late 1990s after decades without a verified sighting on its historic stronghold of Lake Alaotra, a miraculous surviving flock of just 22 birds was discovered in 2006 on an isolated volcanic crater lake in northern Madagascar. Through pioneering captive breeding and community conservation, this medium-sized diving duck has been brought back from the absolute brink of total extinction.
Biology and Physical Characteristics
Aythya innotata is a medium-sized diving duck with a rich, dark plumage palette. Drakes are striking: the head, neck, breast, and flanks are a deep, velvety chestnut-brown that glistens with purplish-bronze highlights in strong sunlight, contrasting with stark white undertail coverts and a pure white belly. The male’s most diagnostic feature is its piercing, luminous white iris, which stands out dramatically against its dark plumage. Females are slightly paler with warm brown tones and dark brown eyes. Both sexes possess a broad, pale blue-grey bill with a black tip and a bright white wing bar that flashes conspicuously in flight.
Behavior and Ecology
A specialized benthic diving duck, the Madagascar Pochard spends long periods diving to the lake bottom in water depths of one to four meters. Staying submerged for 20 to 40 seconds per dive, it sifts through soft benthic sediments with its sensitive bill to extract insect larvae and freshwater mollusks. Unlike dabbling ducks, it rarely feeds on the surface. Breeding pairs build well-concealed nests of woven sedges suspended directly above the water in dense papyrus or marsh tussocks; ducklings are precocial but rely on nutrient-rich shallow nursery zones for their first month of life.
Conservation and Human Impact
The Madagascar Pochard is classified as Critically Endangered on the IUCN Red List. Its historical collapse on Lake Alaotra was triggered by widespread agricultural sedimentation, the introduction of predatory exotic fish (such as snakehead and tilapia) that consumed ducklings and outcompeted adults for invertebrates, and entanglement in monofilament gillnets. A triumphant collaborative recovery effort between Durrell Wildlife Conservation Trust, WWT, and the Malagasy government established a captive breeding center in Antsohihy, leading to the world’s first floating aviary releases at Lake Sofia in 2018.
Interesting Factoid
The Madagascar Pochard was officially written off as extinct, but a forgotten group of 22 birds was found hiding on a remote volcanic crater lake in 2006, leading to a world-first captive breeding miracle.