hi, well about an hour ago a messenger pigeon flew into our chicken pen. he has 2 rings on his leg, one says aus 08. he ate and is resting. he is lovely with white around his beak and seems very friendily and used to people. i dont know any thing about them, should i keep him or let him go when hes ready, he ate ok and looks very healthy, is he on his way somewhere or maybe lost! any ideas would be helpful thanks.