Mute swans are non-native and invasive, but be certain those big white birds are not native tundra or trumpeter swans.
Tag: Invasive species
Posted inEnvironment & Natural Resources
A new invader threatens California water supplies. Can the state stop its spread?Â
Officials are shoring up water systems infiltrated by the golden mussel. Dogs and human inspectors are checking boats at some lakes, but a patchwork of oversight leaves many lakes unprotected.