Date: 1/10/13 9:35 am
From: Max Wilson <max.wilson...>
Subject: [MDBirding] Re: Patuxent North Tract Red Crossbills


I was able to produce a spectrogram from my recording of the Patuxent North Tract Red Crossbills and Matt Young confirmed that they are Type 3 bird. Link to an image of the spectrogram below.

http://www.flickr.com/photos/mercretas/8365507558/

Max Wilson
Kensington, MD
mercretas AT hotmail DOT com

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