Description
The cotton pygmy-goose (Nettapus coromandelianus) is a small waterfowl species found across South and Southeast Asia, extending to Australia. This diminutive bird measures around 26 to 30 cm (10-12 in) in length. The males are distinguishable by their bright white plumage on the head and neck, contrasted by a dark green back, a black neck-ring and a distinctive red eye. Females are generally duller, with a more mottled grey-brown appearance and dark eyestripe. The species can be differentiated from similar small waterfowl by its unique size, coloration, and the sharp contrast between the white and dark plumage in males.
Diet & habitat
The cotton pygmy-goose inhabits freshwater wetlands, including lakes, ponds, and slow-flowing rivers, often preferring areas with abundant aquatic vegetation. It feeds primarily on water plants, seeds, and small aquatic invertebrates. It typically dabbles or grazes along the waters surface when feeding. This species is often seen foraging in pairs or small groups.
Nesting
The breeding season of the cotton pygmy-goose varies geographically but generally occurs during the wet season, coinciding with higher water levels and abundant food. They are cavity nesters, often utilizing tree holes near water bodies. The female typically lays a clutch of 6-12 eggs, which she incubates for about 21-23 days. After hatching, the ducklings are precocial and quickly leave the nest, following the parents to water where they are taught to forage. Fledging occurs around 50-60 days post-hatching.
Status
The cotton pygmy-goose is listed as least concern by the IUCN Red List, indicating that it is not at immediate risk of extinction. However, some populations are affected by habitat loss due to wetland drainage and degradation.
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