Is there any evidence that a rooster's crowing keeps predators away? The reason I ask if we have one rooster and five hens; he was very easy going and docile for quite a while but now he is getting more and more aggressive and is over mating the girls and can also be mean to them. The only reason I have not got rid of him is I think his very loud and almost constant crowing may be keeping the girls safe. We live in the far north of Maine and there are MANY predators on our property, including, racoons, fox, bald eagles and bear. (Almost a year ago a bear broke into our coop one afternoon in broad daylight and killed almost all of our chickens and we have recently had a bear cub walk right through our front yard in broad daylight.)