Yes. This thread is from years ago, same theme.
http://forums.pelicanparts.com/off-topic-discussions/871759-ma-nature-can-beotch.html
I don't know whether it is right to intervene in nature's ways or not. Sometimes I do, sometimes I don't.
I put up bluebird boxes a couple of years ago. They are such beautiful birds and face a lot of obstacles, from predators, to competitive birds, to habitat destruction. A pair moved in to the box nearest our house almost immediately, which was really gratifying. Just two days ago I caught an English Sparrow (AKA House Sparrow) trying to invade the box. It so offended my sense of right and wrong that I shot it right off the top of the bird box. I justified it because English Sparrows are an aggressive, invasive species introduced from Europe that are a big reason the Bluebird population was in decline until humans stepped in.