From that initial encounter I went on to examine more of the clips Cliff was hosting on his northamericanbigfoot.com website. In typical fashion I downloaded several of the best clips, and found they not only validate some vocals captured in other locales, but in one instance his audio includes a new vocal type for the sasquatch lexicon, the "yodel". So this post, long overdue, shares four clips that originated in Cliff's collection and demonstrates familiar vocal features, and introduces the all new yodel (which will appear in future audio posts as well).
This video-spectrogram includes four clips, one from Stanislaus National Forest (2005), another from Gifford Pinchot National Forest (2008), the third from Devil's Ridge (2008) and the last from Will Call Hill (2010). In these clips you'll hear long howls with pitches and resonance very similar to the human voice. You'll also hear the typical pitch breaks, falsetto shrieks, whoops, possible wood knocks and a yodel that makes these clips consistent with the other potential sasquatch vocals studied here at Sasquatch Bioacoustic.