I agree. All efforts should be made to find the owner. Closure
is much bettter than never knowing. Unfortunately, the
information on the band may prove to be not all that helpful.
Actually running down the owner by the band can be difficult.
What will help is if any vet has ever seen the bird and has the
band info. recorded. Only bands issued by certain associations
can turn out to be helpful, and then, only if it has been
recorded somewhere. The ROB on the band has nothing to do with
the birds name. It may be the initials of the aviary where it
was hatched but even that is not certain. The best bet is, in
addition to contacting all local vets, post a found ad. You can
say it's a cockatiel but it's best to require that anyone
responding, identify the bird, whether it has a band or not and
they should also have the info. from the band. In some cases, an
owner may not know, if the bird was too flighty and afraid for
them to ever hold it so they could read the info. However, that
would not likely be the original owner. It would be a rehomed
situation if they have never been able to read it. But they
should be able to give you a good description of it's coloring
and it's markings, which leg had the band and so on. If you feel
sure the owner has contacted you, then you can break the news to
them. If it's a child that contacts you, it's probably best to
ask to speak to a parent before breaking the news. Good luck
with this sad situation.