Musckovy Duck

Description:

All Muscovy Ducks have long claws on their feet and a wide flat tail. In the domestic drake (male), length is about 86 cm (34 in) and weight is 4.6–6.8 kg (10–15 lb), while the domestic hen (female) is much smaller, at 64 cm (25 in) in length and 2.7–3.6 kg (6.0–7.9 lb) in weight. Large domesticated males often weigh up to 8 kg (18 lb), and large domesticated females up to 5 kg (11 lb). One male of an Australian breed weighed about 10 kg (22 lb).[4] The true wild Muscovy Duck, from which all domesticated Muscovys originated, is blackish, with large white wing patches. Length can range from 66 to 84 cm (26 to 33 in), wingspan from 137 to 152 cm (54 to 60 in) and weight from 1.1–4.1 kg (2.4–9.0 lb) in wild Muscovys. On the head, the wild male has short crest on the nape. The bill is black with a speckling of pale pink. A blackish or dark red knob can be seen at the bill base, and the bare skin of the face is similar to that in color. The eyes are yellowish-brown. The legs and webbed feet are blackish. The wild female is similar in plumage, but is also much smaller, and she has feathered face and lacks the prominent knob. The juvenile is duller overall, with little or no white on the upperwing.[5] Domesticated birds may look similar; most are dark brown or black mixed with white, particularly on the head.[6] Other colors such as lavender or all-white are also seen. Both sexes have a nude black-and-red or all-red face; the drake also has pronounced caruncles at the base of the bill and a low erectile crest of feathers.[3] C. moschata ducklings are mostly yellow with buff-brown markings on the tail and wings. Some domesticated ducklings have a dark head and blue eyes, others a light brown crown and dark markings on their nape. They are agile and speedy precocial birds. The drake has a low breathy call, and the hen a quiet trilling coo. The karyotype of the Muscovy Duck is 2n=80, consisting of three pairs of macrochromosomes, 36 pairs of microchromosomes, and a pair of sex chromosomes. The two largest macrochromosome pairs are submetacentric, while all other chromosomes are acrocentric or (for the smallest microchromosomes) probably telocentric. The submetacentric chromosomes and the Z (female) chromosome show rather little constitutive heterochromatin (C bands), while the W chromosomes are at least two-thirds heterochromatin.[7] Male Muscovy Ducks have spiralled penises which can become erect to 20 cm in one third of a second. Females have cloacas that spiral in the opposite direction to try to limit forced copulation by males.[8]

Habitat:

The Muscovy Duck (Cairina moschata) is a large duck native to Mexico, Central, and South America. Small wild and feral breeding populations have established themselves in the United States, particularly in the lower Rio Grande Valley of Texas, as well as in many other parts of North America, including southern Canada. Feral Muscovy Ducks have also been reported in parts of Europe. They are a large duck, with the males measuring about 76 cm in length, and weighing up to 15 pounds. Females are considerably smaller, and only grow to 7 pounds, roughly half the males' size. The bird is predominantly black and white, with the back feathers being iridescent and glossy in males, while the females are more drab. The amount of white on the neck and head is variable, as well as the bill, which can be yellow, pink, black, or any mixture of these. They may have white patches or bars on the wings, which become more noticeable during flight. Both sexes have pink or red wattles around the bill, those of the male being larger and more brightly colored. Although the Muscovy Duck is a tropical bird, it adapts well to cooler climates, thriving in weather as cold as –12°C (10°F) and able to survive even colder conditions.[2][3] In general, "Barbary Duck" is the term used for C. moschata in a culinary context. Since there are two varieties with clear phenotypic differences (a wild and a domestic) there are proposals to divide the species into two subspecies. The wild subspecies is known as "Pato Real" (Royal Duck) in most of its natural range and its scientific name is Cairina moschata sylvestris (Stephens 1824). Of the original wild species, due to the management by indigenous communities, was derived since pre-Columbian times the domestic subspecies known throughout Latin America as "Pato Criollo" (Creole Duck) (Cairina moschata domestica), which shows significant variations: due to the selection and domestication by man, this subspecies was made it heavier and less able to fly long distances to find their food, as does its wild ancestor. Its feathers are less bright and have a greater variety of colors, being very common specimens with belly, neck and face whitish. The colors are not uniform in all individuals: there are individuals completely white or only black, gray, brown and there are else with different combinations of these colors. This domestic subspecies is also known in Spanish as "Pato Casero" (backyard duck) or "Pato Mudo" (mute duck).

Notes:

I saw it in this little lake. Apparently, it was domestic but now is free. The problem? This is not its habitat.