I answered your question. If you wish more detail than I provided, find it yourself.

Till now, you seemed to be a reasonable guy with different opinions on the issue. Now you are simply proving to be another mindless Bluebird drone with no real understanding of wildlife management and no thoughts of your own. If you have an issue with the methodology please point out that issue specifcally. Otherwise, you have simply shown a willingness to follow bluebirds lead in criticizing something you can't comprehend.