Congratuations! You know, there is no better conditioning tool than letting the birds range on their own outside, so long as they can be kept safe from predators, and there are not too many roosters to damage the hens' feathers. Some colors, like buff and white, can be damaged by the sun, as their feathers become bleached or become brassy in the case of some whites. Wheaten and blue wheaten females, on the other hand, can actually benefit from the sun so long as it is not overdone.