I do believe doos good enough do 90% of the time make it back( apart from bop, wires etc). I saw a doo coming to a loft at half ten at night on Saturday flown right out but he worked it out a worked his balls off to get home. Maybe doos that don't have that sort of constitution or breeding in them just give in. I lost 9 that day and my loft is a better loft for it imo