Citation Hunt

The Wikipedia snippet below is not backed by a reliable source. Can you find one?

Click I got this! to go to Wikipedia and fix the snippet, or Next! to see another one. Good luck!

In page Introduced species of the British Isles:

"

Some species have adapted harmoniously into the ecology of the British Isles. For example, the little owl is not native to the British Isles but was first introduced in 1842,[1] by Thomas Powys and is now naturalised there. However, the presence of some introduced species has proved disastrous for native flora and fauna. There is often a link between how well a species can integrate with an existing ecosystem, and the distance from their local range; i.e. species sourced closer to the sink site tend to cause less damage.