Possible whistles and wood knocks heard between Tonasket and Republic witnessed in Okanogan County, Washington

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My husband and I had been cutting firewood just off a mountain road. I was busy cutting off knots from the already cut chunks of wood and my husband was running the noisy chainsaw. Over the noise of the chainsaw I heard a loud snap (brush) and looked over in the direction it came from and saw nothing. I had seen cattle in the area just prior to that but they all ran off when the chainsaw started. No cattle in sight. About an hour later I went over to the pickup truck to get a drink of water and started hearing noises I've not heard in the mountains before. I was raised deep in the mountains so am very familiar with forest sounds. On the other side of the roadway is a heavily wooded and deep canyon. From that direction I heard a "knocking" sound. Not a woodpecker as this was slow and not too loud. Then I heard a soft whistle and what sounded like a parrot or mynah bird when it's trying to learn to talk. Just kind of "gibberish", then the knocking and the soft whistle. Again, I've he...