It sounds like you have a nice set up for them and they will be much better off than in a bird store. They might even breed in the calmer environment. The only thing to keep alert about if they breed in a mixed aviary is some doves can get aggressive towards other doves when breeding - but I don't know if that applies to Peruvian Ground Doves or if they would exhibit that if the aviary is large enough. I know my Ringnecks get very territorial about their cages, especially when in "breeding mode".
In addition to seed / pellet mixtures, my doves like frozen (thawed) baby green peas, fresh eggfood (finely crushed hard boiled eggs), and hemp seeds. I give them these foods as supplements - the egg food, in particular, would be a rich food that they should probably not get every day - unless they are breeding (in which case, daily egg food is a good idea). Egg food will also help
stimulate breeding, as will nesting material left on the bottom of the cage.
I make eggfood by mixing crushed hardboiled eggs with a little Corn Meal, and a product called Miracle Meal (available via the internet,
http://www.ladygouldianfinch.com/produc ... lemeal.php). I store it in the refrigerator and give them only enough for them to eat in a few hours. You can also sneek some powdered vitamins into egg food. Egg food is alot of protein and some birds - finches included - sometimes seem to show more aggression with too much eggfood so just don't over do it. But as a treat once or twice a week or daily during breeding time, it's fine.
You should also supply extra calcium when breeding. I give mine grit, crushed oyster shell, and sterilized crushed eggshells (also available on-line,
http://www.ladygouldianfinch.com/product_hatched.php) all the time. Doves need grit all the time anyway because they swallow their seeds whole.
Hemp Seed is also available on-line or even on eBay. Although hemp is technically a form of marijuana, it is legal as a bird food because they sterilize the seeds. Doves (and many other birds)
LOVE hemp seeds - mine will fly over to me immediately (as soon as I open the plastic bag) and eat it right from my hands - but it is a rich food that is best reserved as a treat - or sprinkled over egg food sometimes. I don't know how easily your doves will ever tame but hemp may eventually get them to be braver and approach you more. I was able to hand-tame this Scarlet-Chested Parakeet with hemp and this species is not extremely tameable!
