Nathan Pieplow has posted to his excellent website a superb introduction to redpoll vocalizations. Here:
If you thought the streaks on the under-tail coverts are all there is to it, wait till you get a load of Nathan's sound spectrograms. Me?--I'm gonna go back and review the recordings I made in December 2012, and see if I can get a Boulder County armchair (or, rather, headset) lifer out of it!
Also, there's discussion online of Tom Johnson and Luke Seitz's redpoll photo quiz in the current issue of Birding magazine. Here:
It's good to ponder redpolls on muggy (for real!) evenings in early August in Front Range metro region.
Ted Floyd
tedfloyd57@hotmail.com
Lafayette, Boulder County, Colorado
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