We always used to keep chickens, no one complained and they used to like some of our very superior eggs too. Cockerels are the anti social ones of course. We did not have one of those. Clucking chickens is hardly anything to be whingeing about surely. I can't see how you can complain about her pets anyway, as long as they don't damage your property.
It was reported that if you have a garden you will always be within a few yards of a rat-anywhere!
Les