[TN-Bird] Re: pif landbird population estimate for loggerhea

I've heard complaints about a variety of species both in TN and in other =
states.  Certainly the numbers you guys have dug up certainly seem quite =
wrong.  The PIF folks have a good approach to calculating these population =
estimates and they are using a variety of available data sets.  However, =
taking BBS data and other data sets and breaking it down from a continental=
 or regional scale to a state level is very difficult for a variety of =
reasons.  This is also not too far past the beginning stages of utilizing =
the available data for this purpose and it needs a lot of tweaking that =
they do not have the expertise to do (since they don't know the birds in =
specific counties, etc.).  Also, analyses such as these are raising =
questions about detectability and needs to refine protocols, i.e. making =
BBS better.

There are obvious difficulties here and they are looking for feedback from =
folks like us on where their estimates went wrong and how to adjust them.  =
They currently don't have online feedback available.  If you have specific =
comments or questions, please forward them to me and I will compile and =
forward them onto the folks that have done this work.  Forward comments to =
me at: scott.somershoe@xxxxxxxxxxx

Thanks,
   Scott

State Ornithologist
Tennessee Wildlife Resources Agency
P.O. Box 40747
Nashville, TN 37204
615-781-6653 (o)
615-781-6654 (fax)
=20
UPS address: 440 Hogan Rd
                         Nashville, TN 37220
=20
FedEx address: 5107 Edmondson Pike=20
                           Nashville, TN 37211


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