- Colorado, April 29, 2011Recorded by Andrew Spencer / Macaulay Library
- Colorado, April 29, 2011Recorded by Andrew Spencer / Macaulay Library
- Colorado, June 18, 1961Recorded by Robert C. Stein / Macaulay Library
- Colorado, March 13, 2008Recorded by Andrew Spencer
- Colorado, February 01, 2011Recorded by Thomas G. Sander / Macaulay Library
- Colorado, December 08, 2007Recorded by Nathan PieplowMedia Player Error
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Listen to more sounds of this species from the ML archive.
Listen to more sounds of this species from the ML archive.