Obnoxiously loud hen

[aart]

I have 7 hens and also feel they have become increasing vocal. I have new neighbors so I really would like them to quiet down. I let then free range quite a bit during the day. I try to make sense of their noiseyness like want to be fed, let out, calling for friends, do not want to wait for open nesting box, predator alert... but feel more often than not they are just being increasingly more vocal. Any suggestions to quiet them down?

How old are your hens?
How much space do they have when not ranging(your neighbors might not like that either)? Dimensions and pics of your coop and run might help.
Chickens are loud..fact of life.