Ya mean besides telling the internet that you have them?Not legally, I don't think. By law, I'm supposed to have some sort of license to keep chickens at all (an AI thing), even though I own 3+ acres of ground zoned agricultural. I've not bothered to get licensed; I have a problem with someone who's not contributing to my mortgage payments telling me what I can or can't do on my own property as long as it's not adversely impacting anyone else. I just don't advertise the fact that I keep chickens, or attract attention to it.