A newbe with a question .. last winter we went to a short talk on backyard poultry raising by our local agri-county agent, one big take away we got from this talk was to be very care full introducing other birds to an existing flock...in that you can never be sure what diseases they may carry. Well after reading alot of posts here on the forum, it seems alot of people swap chicks, chickens without regard to disease issues, but possibly I'm missing something in these short forum exchanges ? Is there any precautionary measures that people take before introducing new birds to an existing flock... quarantine possibly and for how long ? Any other words of wisdom, or hints from expert backyard poultry raisers appreciated !!!