Thats not uncommon at all talking on the roost will do that anything can almost get them gobbling on the roost an get them worked up then fly down an nothing i myself dont like to talk to them on the roost (it is fun an can get you just as worked up) but it also lets them know right where you are
an when he comes off the roost it can lock him up. I also try to stay as far awayas possable from the roost if i know their travil patterns it gives them a chance to look for you