Hello! Yes, this would be completely fine. The chocobos would be found wandering in the wild, normally the forests but also the area of the Badlands that Solvunn can now access if you wish for a reason for them to travel there.

Solvunn has thomas birds that previous Summoned raised. It would be reasonable that by now, there is now a small range where a commune member continues to tend to those birds. The chocobos could potentially be stabled here as they're similar types of animals. Exchanging favors would work!