If your bird goes into someone else's loft you have a chance of getting it back. If its found on the street by joe public then wheather its stamped or not wouldnt make any difference i dont think ?
I lost a bird that i let out a week ago and it turned up today. How long have you lost a bird before it comes home??.and where would it have been and what would it have been feeding off and why did it come home again.