Indian Spot-billed Duck

Identification

The Indian spot-billed duck is a large dabbling duck roughly the size of a mallard, measuring 55–63 cm in length with a wingspan of 83–95 cm. These mainly grey ducks have a distinctive paler head and neck, with a black bill tipped bright yellow. The most striking field mark in the nominate subspecies is the red spot at the base of the bill—absent or inconspicuous in females and absent entirely in the haringtoni subspecies found from Myanmar to southern China and Laos. At rest, a prominent white stripe formed by the white tertials stands out conspicuously on the side of the body. In flight, the species is distinguished by a green speculum bordered with a broad white band at the base. The legs and feet are bright orange to coral red. Males lack an eclipse plumage, remaining visually similar year-round, while juveniles are browner and duller than adults.

Range & Habitat

This species is a non-migratory resident throughout freshwater wetlands across the Indian subcontinent, with populations found in Pakistan, India, and Sri Lanka. The nominate subspecies inhabits India and Sri Lanka, while the haringtoni subspecies ranges from Myanmar to southern China and Laos. These ducks prefer medium-sized wetlands with vegetation cover and tend to avoid very large patches of open water. Interestingly, the northernmost populations have expanded their range northwards by more than 500 km since the early 20th century, possibly in response to global warming.

Behaviour & Diet

The Indian spot-billed duck is gregarious outside the breeding season, forming small flocks on freshwater lakes and marshes in fairly open country. These dabbling ducks feed mainly in the evening or at night, consuming plant material including rice crops, as well as invertebrates such as snails. Breeding season timing varies with rainfall and water conditions, occurring from July to September in northern India and November to December in southern India, with multiple broods possible in a single season. Nests are built on the ground hidden in vegetation near water, though nests have occasionally been found on tree branches covered by creepers. Females typically lay 8–14 eggs, with chicks hatching after approximately 24 days of incubation. The black chicks with yellow backs resemble mallard chicks but have a wider eyestripe. Both males and females undergo a complete post-breeding moult, dropping all wing feathers simultaneously.

Best Time & Places to See It

The Indian spot-billed duck can be found year-round throughout freshwater wetlands across Pakistan, India, and Sri Lanka, as this species is non-migratory. Birds are most readily seen and concentrated during the breeding season—July to September in northern India and November to December in southern India. Outside breeding season, look for them in small flocks on medium-sized lakes and marshes with vegetation cover. Early morning and evening visits to wetland habitats offer the best chances of observation, as these ducks are most active during these times.

Photography Tips

Photographers should position themselves during dawn or dusk when these dabbling ducks are most active and feeding. The distinctive white stripe on the flanks provides an excellent identifier at distance and should be featured in side-profile shots. In-flight photography will showcase the striking green speculum with white border—a key field mark. The bright orange-red legs and feet contrast beautifully with the grey plumage and can be highlighted in water-level shots. For subspecies poecilorhyncha, try to capture the red spots at the bill base, which are a defining feature. Patience is essential, as these ducks prefer medium-sized wetlands with vegetation that may partially obscure views. Using vegetation as foreground framing can add natural context to your images.