True, but NZ has also learned it the hard way. There was once a vibrant birdlife in the South Island, especially. There is some early settler who said that the

True, but NZ has also learned it the hard way. There was once a vibrant birdlife in the South Island, especially. There is some early settler who said that the morning birdsong in Queenstown was deafening. Cats, introduced by European settlers, killed off a lot of the native birds, and the ecosystem is only recently hobbling back to normal (have done birdwatching in NZ). If you are interested in bird conservation in NZ, please visit Karori park in Wellington and contribute. BTW: some parks in US also have installed brushes to wipe your boots for preventing the transmission of invasive species seeds. I think there are a few in Wisconsin that I remember.