I have 4 pullets 8-12 weeks old they have been out in the coup/run for a week now. They seem to spend most of the day perched up 2 feet off the ground on the support braces for the raised coup. They have a swing and 2 perches on the ground When they Come down the seem to get a quick bite to eat some water and jump right back up. Is this normal? Do they just need time to get comfortable?