At the same Hot Spring Campground near Garden Valley, Idaho where I had the Nuthatch Trifecta, we had several White-headed Woodpeckers. I enjoy all woodpeckers, but this was only my second time seeing White-headeds and it was my first time seeing them in Idaho! White-headed Woodpeckers are most common in the states along the west coast of the United States, but are occasionally seen in Nevada and of course in Idaho.
This last photo I include because I thought the branches of the Ponderosa Pine looked cool and it shows the common habitat for the White-headed Woodpecker. I was able to watch them glean bugs or larvae from the bark. All About Birds mentions that they rarely drum, so I consider myself fortunate to have heard and seen it several times over the four days we camped there. All About Birds also reports that they chip open pine cones while hanging upside down, which I did not see.
Garden Valley is less than an hour north of Boise, Idaho and is a great destination for birding, camping, hiking, kayaking, and even for musical plays at the Starlight Mountain Theater.