HI ALL:
I was checking out Sibley's website and thought these links might be of
interest:

http://www.sibleyguides.com/2011/03/the-caribbean-coot-in-north-america/

http://www.sibleyguides.com/bird-info/field-identifiable-subspecies-of-birds--an-annotated-list/

http://www.sibleyguides.com/2011/04/sibley-guide-in-action-redpoll-identification/

http://www.sibleyguides.com/2011/03/distinguishing-green-winged-and-common-teal/

sincerely
--

Ian Paulsen
Bainbridge Island, WA, USA
Visit my BIRDBOOKER REPORT blog here:
http://birdbookerreport.blogspot.com/