I know where you are coming from on this.
I did exactly the same - decided to get our girls, all four of them, plus an eglu (hasten to add wasn't cheap). Didn't tell my OH as he works abroad and normally does for 3 months at a time, so thought had plenty of time to slip the subject in text messages etc.
He came home to find our lovely patio messed up with chicken poo and the girls having general run of the garden. Every time he went outside his shoes would get caked in it but that was two years ago!!
How did he come round - first morning home gave him a full fry up with two home grown eggs and presto. He had tto admit nothing tased better. Since then every time he is home on his holiday he is out there cleaning them out and moving them to a new patch in the garden. We have now enclosed them in a large run to keep our newly cleaned patio clean and we managed to catch them to clip their wings.
He is now even talking about getting more chickens and selling the eggs to passing traffic!!!
Mind you I just agree with him, keep him thinking that it was all his idea!!! :roll:
So don't give up - they are a good investment - lovely eggs, talk to you when no one else does (especially if sent to coventry by the OH and kids), clear weeds away, eat the grubs and ae fun!!!!