Pigeons around here need nothing special.A dry draft free coop that is predator proof will get you more birds than you can shake a stick at.I started with 5 breeding pairs one year and by the end of summer had over 30 of their offspring that I was able to use for training.Disaster struck when coopers hawks and a weasel went on a killing spree,I lost 15 birds in one night to the weasel and the hawks picked em off one at a time.I free range mine,it's cheaper on the feed and makes for no chores,downside is the population goes up and down.If I locked them up I'd more than likely have 40 or more.