When you see a tagged bird, you can send the details in the to Birds Bander’s, and they will get back to you with information as to the age of the bird and where it was banded. these birds are migrating so it would be interesting to find out where they are from. https://www.pwrc.usgs.gov/BBL/bblretrv/
Within 24 hours I received two certificates which can be viewed as you scroll through the batch of swan photos.
Trumpeters were at one time hunted to the point of reducing its numbers significantly, they have now bounced back to a population world wide of about 18,000.