All,

Someone has to step forward and put this thread into proper perspective. OK,
I'll do it!
"Extirpation" means total loss or destruction or extermination; e.g., the
extirpation of the Passenger Pigeon.
This discussion is more about species that have been displaced from parts of
their historical ranges for one reason or other and the possibility of
reintroduction. If the birds you're talking about have been "extirpated," we're not
having this discussion. We cannot reintroduce that which has been extirpated,
unfortunately.

Cheers,
Joe Meche
Bellingham, WA