Muscovy Duck

The Muscovy duck, Cairina moschata, is a robust bird native to the Americas. Males are substantially larger than females, with the former reaching lengths of about 76 cm and weighing up to 7 kg, while the latter grow to roughly half that size. The plumage is predominantly black and white, with males displaying iridescent and glossy back feathers, and females appearing more subdued. The amount of white on the neck and head varies, as does the bill color, ranging from yellow to pink to black, or a combination thereof. Both sexes possess distinctive pink or red wattles around the bill, with the male's being larger and more vivid.

Identification Tips

Muscovy ducks can be identified by their large size, long claws on their feet, and a broad, flat tail. The males, or drakes, have a more pronounced appearance with caruncles at the base of the bill and a low erectile crest of feathers. Ducklings are mostly yellow with buff-brown markings on the tail and wings, and they lack the adult's wattles for a period after hatching.

Habitat

These ducks are typically found in forested swamps, lakes, streams, and nearby grasslands. They are known to roost in trees at night.

Distribution

Originally from the Rio Grande Valley of Texas and Mexico down to Argentina and Uruguay, feral populations have established themselves in New Zealand, Australia, Central and Eastern Europe, and parts of North America, including Florida, Louisiana, Massachusetts, and the Big Island of Hawaii.

Behaviour

Muscovy ducks are non-migratory and can be aggressive, with males often engaging in fights over food, territory, or mates. They are adaptable to cooler climates and can thrive in temperatures as low as −12 °C.

Song & Calls

The drake emits a low breathy call, while the hen produces a quiet trilling coo.

Breeding

Muscovy ducks do not form stable pairs and can breed up to three times a year. The hen lays 8-16 white eggs, usually in a tree hole or hollow, which are incubated for 35 days.

Diet and Feeding

Their diet consists of plant material, small fish, amphibians, reptiles, crustaceans, insects, millipedes, and worms. They forage by grazing or dabbling in shallow water.

Conservation status

The Muscovy duck is classified as Least Concern by the IUCN, with a wide distribution and established feral populations.