The birds probley gone from hunting and being handled weighed and transported every day to being stuck in a free loft situation....Hes bored and lonely,... of course hes calling. This is the major fault with free lofting, if your not carfull he may even become agresive as hes a first year bird. I dont recomend freelofting for juvies, If they are well manned then there should be no problem moulting him out on a bow. You can continue to handle him dayly and keep him active with jump ups and amused with carriage.Its harder work for you but..honestly youll have a better bird to start the season wi