Thank you for all the suggestions! My only problem with trying to place them on the roosting bar is they are very flighty and won't let me really "hold" them. Perhaps closing off the nesting boxing and raising the bar will help with this? I like the 2x4 suggestion, since they seem to have a hard time balancing on the bar that is currently there. I really want to make sure they have everything they need to be happy!
That's why it needs to be done at night after they have gone into their torpid state. Not only will they be much easier to handle then, but when they fully revive in the daylight, they will already be on the roosting bars.