KnockerNorton
Well-known member
We cannot is a big phrase. "We" disposed of Coypu: previous to that "we" disposed of Musk Rat. This is unquestionably a job for national government and there is very little that cannot be done with appropriate resourcing. National pressure on multiple aspects of life cycle is the way to get results.
John
How many coypu? A few thousand, if that? Distributed where? one small area of Nofolk? In one kind of highly restricted habitat (littoral)? Musk Rats, even less!
It's easy when there's only a few of them and we know exactly where they are, and are able to easily get at them. It's a lot harder when there are millions of them, all over the place, with plenty of refuges where you'll never get at them (gardens, suburbs).
Bullfrogs, coypus, musk rats - all specialists that were at a very low population level and hadn't become widely established. Easy.
Muntjac, mink, rabbit (>95% killed in the 50s through deliberate disease, millions shot/gassed every year; and how many do we still have today?). Add Grey Squirrel to that list of species we'll never be rid of. Once these more generalist species get widely eastablished, they're virtually impossible to remove at an acceptable cost. And probably completely impractical anyway.