Someone asked about head space needed above a roost several pages back. I never saw an answer to this question. I would also like to know.
Second question. So far, everyone has shown nests on the floor. Would a turkey hen use a nest three feet up?
My heritage girls roost 7ft up in the rafters of my poultry shed & have 1-2 ft of clearance depending on where they choose to roost. My heritage tom only roosts about 3-4 ft up on a tree branch roost. It has a "ladder" up to it so he just walks up & down & doesn't have to jump. The hens hop up to the lower roost & then into the rafters but jump/fly down when I open the door in the morning. I do not clip wings & they rarely try to hop my 4 ft fence though they easily could. There's no cover over my run & most of my birds could easily get out but choose to stay where the food is.
For bb turkeys, roosts should only be about a foot off the ground. I never saw any of my bb on the higher roosts after they were about 4-5 weeks old.