"Two tropical birds found only on Bonaire are the Caribbean parakeet (Aratinga pertinax, subspecies xanthogenius) and the yellow-shouldered parrot (Amazona barbadensis, subspecies rothschildi)."
Aha! I believe I understand where you're coming from, now.
There is bit of "local boosterism" going on here, I think. The website is touting the local sub-species,
Amazona b. rothschildi, as a bird "found only on Bonaire" - which, I suppose, it may well be. But it is recognized, as things stand, that it is just
one of the
sub-species that comprise the species as a whole. The nominate sub-species of Yellow-shouldered Amazon,
Amazona b. barbadensis, has a bit of a wider range in Venezuela (see map in the BI link.)
So it comes down to whether or not recognized sub-species "count" (whatever-the-heck
that means) as a "new bird" or not - a question I will not comment on.
(Of course, if the "splitters" have their way, the Bonaire sub-species may get full species status someday, so you never know...)
BTW, can emphasize with the feeling of being in a great tropic place with non-birders - what a drag, to be in with a crowd of people with all the wrong priorities
.
Peter C.