Earlier this month I posted about the use of tracking tunnels to monitor UK hedgehog populations. I also posted about introduced European hedgehog populations abroad. This article, published in the New Zealand Journal of Ecology, shows the success of tracking tunnels for detecting introduced hedgehog populations in New Zealand. Link to the full article here:

http://nzes-nzje.grdev.co.nz/new_issues/NZJEcol38_1_86.pdf