The Muscovy Duck, Cairina moschata, is a large uck which is native to Mexico, Central and South America. A small wild population reaches into the US in the lower Rio Grande River basin in Texas. There also are feral breeding populations in North America in and around public parks in nearly every state of the USA and in the Canadian provinces; feral populations also exist in Europe. Although the Muscovy Duck is a tropical bird, it adapts to icy and snowy conditions down to −12°C (10°F) and below without ill effects.