[TN-Bird] Dyer County Trumpeter Swans
- From: Bill Pulliam <bb551@xxxxxxxxxxxxx>
- To: TN-birds <tn-bird@xxxxxxxxxxxxx>
- Date: Thu, 15 Jan 2009 14:17:51 -0600
Thanks to Mike Todd for following up on these birds and getting those
excellent photos! I was running late when I found them, so I just
looked at them, called Mike, and headed on. Quite a nice pair of
birds! When I first saw them there something about the scene said
"Trumpeters;" probably a flashback from my summers in Yellowstone
where a pair of Trumpeter Swans gracing a pond was a classic sight.
Almost certainly these birds are from one of the reintroduced
populations in the midwest. I've reported the collared bird, soon I
should get some info on where she was collared and whether she was
released or wild-hatched. Though hardly the most important aspect
of this very successful reintroduction program, it does bring up the
issue of whether these birds are "countable." Generally under ABA
rules, an individual of a native species that has been reintroduced
to a spot within its historic range is "countable" if it was wild-
hatched. Of course you can't always tell this; in the case of the
uncollared member of this pair there's no way to know if he was wild-
hatched, or a captive release who lost his collar. Even in the case
of the collared female, the wild-hatched birds from these populations
are often captured and collared as well. At least one state
(Illinois) has determined that rather than having to debate and
determine the origins of each individual bird, the Trumpeter Swan
will in general be once again considered a wild, countable species
there. I suppose the records committee here will get a chance to
address this matter as well when I get my act together and submit a
report on these two birds...
Bill Pulliam
Hohenwald TN
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