My girls are around 2 1/2 months old. Every night, and I sat and watched them tonight, they start chirping unlike they do during the day. They file up the ramp and walk around for a minute or two then, almost in a panic, file back down to sleep on the base of the ramp for the night. Is there an improvement I can make to my roosts or is this just teenage behaviour? There are a few more pics on my page. Would appreciate any comments!