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Mute swans can be very aggressive in defence of their nests and are highly protective of their mate and offspring. Most defensive acts from a mute swan begin with a loud hiss and, if this is not sufficient to drive off the predator or intruder, are followed by a physical attack.
Mute swans are native to Europe and were brought to North America to decorate urban parks. Why is it invasive? These birds are highly aggressive and will chase both humans and native birds.
The Mute Swan (Cygnus olor) is one of the world's largest waterfowl and one of three swan species that occur in North America. This bird is not native to the continent and is considered an invasive species outside of Europe and Asia.
Mute swans (Cygnus olor, Figure 1) are an invasive species originally brought to the United States in the late 19th and early 20th centuries for ornamental ponds and lakes, zoos and aviculture collections.
24 gru 2015 · The swan population is ballooning in New York, and the state’s environmental agency (DEC) views the birds, native to Eurasia, as an invasive species harming the local ecosystem. Opponents contend that the graceful birds pose no threat and are beloved by New Yorkers young and old alike.
Mute swans were introduced to North America in the mid-1800s to decorate parks and estates, and later brought to Michigan in 1919. These captive swans escaped and established a feral population. With their numbers growing quickly, this non-native invasive species is causing conflicts and damage across the state. Protecting Our Trumpeter Swan.
Continuous feeding by a flock of mute swans can destroy an entire wetland ecosystem. These large birds show little fear of people. Each year the DNR receives reports of mute swan attacks on people in boats and on shore.
