I've just had my first season with old birds i lost 20 birds and only had two reported. It is very disapointing for people like me who are starting out it makes. you feel is it worth it, all the birds had wing stamps and quikie ring numbers on the feet. so there was no excuse for people not to report them.
It does worry you when you read e-mails about people selling birds on in pet shops. i would like the address of the pet should not to report them though.