In addition to the excellent study aides from Wilberding, Sibley and many others,
-- I found it helpful to go to Glenn Walbek's photo site (the link is http://www.pbase.com/gwalbek)
Open the file "2013 birds" and look at the 4th photo in the second row.
There one can compare side-by-side photos of perched Common and Hoary Redpolls, feather by feather. This comes up aces in
my opinion. All of the other photos I have seen have been quite useful, and thanks to all the photographers and descriptors.
Joe Roller, Denver
Founding member of "CHORES"
"Common and Hoary Observers Reporting Educational Stuff"
Remember, "It's a chore!"
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