Once again, humans have to interfere. I can agree that USA may have proof of these colonies doing damage to pylons and local power BUT there are approx 100 in this country and no damage has yet been done. How can we simple cull them ? Prevention is certainly better than cure, I admit that, but surely we should be thinking of alternatives ? Why is culling, when it comes to animals, always the answer!
http://www.independent.co.uk/environment/nature/alien-parakeets-days-could-be-numbered-2274064.html
Re-homing is definitely a better alternative than shooting them.
Animals Do Have A Voice Blog 