I think this is coyotes. They are known to make odd sounds like this. I think they were responding to the call. It is a great catch though.
A listener writes “Hi Wes, I’ve been listening to your show since you began and love it. My friend’s husband was elk hunting yesterday morning in the Uinta mountains, near Vernal, Utah. Just wanted your opinion if you think this was coyotes only? He doesn’t believe in Sasquatch, but my friend and I do. We thought it was interesting.”