tskyes, what would you prefer, a non fancier picks up one of your birds and finds a fancier who knows how to care for it for you while you are traced or the bird to be possibly poorly cared for while you are traced?
I'm sure the non fancier has kept track of where the bird is incase the owner bothers to claim it!
It may have been stamped last year but as we know the birds go through the moult etc which is why they should be restamped before training but i'm sure you've done all yours!