Dovecotes are a great addition to any small farm (and possibly your backyard too). Keeping doves is like keeping chickens, in a way, except there’s minimal feeding involved if you take the traditional approach. The doves fly off every morning, forage within their natural radius, and come home each night to roost.
And when they come home, they deliver to the floor of the dovecote free nutrients, in the form of guano. So firstly there’s free fertilizer, with no feeding costs. Secondly. if you’re that way inclined, there’s a seasonal supply of dove eggs, and squabs. Wild protein, delivered to your door. - Milkwood