"A new law in California will allow year-round killing of non-native swans starting next year a move that some officials have said is essential to protect the state's already diminished wetlands and native waterfowl, but which others have labeled as inhumane. Mute swans, which have been valued as ornamental birds, have rapidly expanded across California, where wildlife officials say they degrade habitats and aggressively displace native species."
"California has lost between 90 and 95% of its historic wetlands, and these birds occupy those wetlands and do a lot of damage. Mute swans can alter wetlands when they move into areas where they have not previously been. Because they're big birds, they do tend to consume quite a lot of vegetation, said Margaret Rubega, an ornithologist and professor of ecology and evolutionary biology at the University of Connecticut."
Assembly Bill 764 adds mute swans to the list of invasive birds that can be hunted with few restrictions, effective January 1. State wildlife officials cite rapid expansion of mute swans and habitat degradation as reasons for the change. California has lost between 90 and 95% of its historic wetlands, increasing concern about species that further damage remaining habitat. Mute swans consume and uproot aquatic vegetation and can alter wetland structure and ecology. Breeding swans can aggressively defend territory and displace native waterfowl. Opponents characterize the measure as inhumane.
Read at www.theguardian.com
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