Yes, when an animal species is labeled as invasive in the US that means it is a threat to the environment. Invasive Muscovy ducks compete with other waterfowl for space and they spread disease. There is a difference between the invasive muscovies and wild muscovies that are native to small parts of texas in the US. Wild Muscovies still receive protection from the Migratory Bird Treaty act and can not be hunted without a license. Wild muscovies are a threatened species in the US. Feral muscovies are escaped domestic birds that started a population in the wild. The appearance of the two birds is very different, so is the attitude and behaviors. Wild Muscovies are truly wild animals so their lifestyle is also much different in the wild than the escaped domestic birds
Protesting from citizens when the government decides to kill invasive species is a thing in the US too. Oiling Mute swan eggs up by lake Michigan to control the population caused a lot of protesting here. It was done to help the Trumpeter swan (Native species) make a recovery from being endangered. The mute swans were introduced in the 19th century because Trumpeters nearly disappeared from the area due to over hunting. The oiling was done because it was thought that the mute swans were slowing down the recovery process of the trumpeters. Of course once the trumpeter population got going it was soon discovered that mute swans were not a threat to them, it was the opposite.
