This morning I heard an unusual song at the top of Mt. Tabor. I found the bird singing from the very top of a conifer looking SE from the top. It sang for more than 10 minutes, repeating the song. It was back lit and I couldn't make out much in the way of plumage, but it was the size and shape of a Junco. However, it was not singing a typical "Oregon" Junco song. It had a trill of the same cadence as an Oregon Junco, but was less metallic and more warbler-like, then it ended with an upslurred two-note phrase, again somewhat warbler-like. I found a song that matched on the app I have (iBird Pro) for Slate-colored Junco, except the upslurred note at the end was not part of the recording. Sibley's description for Gray-headed Junco matches well: " Song and calls identical to Oregon Juncos but a few sing complex song: tu-tu-tu-tu-tu-tu-zeeeeeee-tip." This sounds right but it is not a recording so I can't be sure. Has anyone else heard this song from an Oregon Junco? I've never heard it before and I've also never seen a Junco singing from the very top of a conifer, sitting in one place, and repeating a song for 10+ minutes. My bet is it is one of the more unusual races of Junco, especially unusual to be singing here in June. I hope someone else hears this bird and maybe gets a better look at it. Jason Wolf