Surprise, Surprise: Banded Royal Tern

I was looking through my photos from a trip out to Cupsogue County Park on July 8th and noticed this, a banded Royal Tern!  This is my first discovery of a banded bird other than Canada Geese.  Unfortunately the band number is unreadable in the photos.  However the obvious or maybe not so obvious metal band is visible on this Royal Tern's right leg.  These photos also show just how large they are in comparison with the Ring-billed Gulls.  It was nice to see this Royal Tern in full breeding or alternate plumage since they molt almost immediately after nesting.  For the vast majority of the year they lack the full black cap, just retaining the black shaggy crest.