No-crow collars are cruel and can hurt the rooster, I've heard they limit air-flow. Plus, crowing is apart of a rooster's nature. Like others on here have said, if you live on four acres and have no enemys, just wait and see if anybody DOES complain. It could be nobody ever notices or cares. Or they figure if you have it then you're allowed to have it. And as far as rooster's crowing being obnoxious or annoying, somebody just drove by blaring loud obnoxious music, and that's allowed! Trucks and cars go by all the time, being just as loud as a rooster, and that's allowed! Even dogs barking is tolerated more. But a rooster just saying "I exist and these are my hens" is not allowed. So I really wouldn't feel bad. Try keeping him, you didn't move out to the country for nothing!