Junco hyemalis caniceps
Most of the Juncos we have are Oregon Juncos, Pink-Sided Juncos, and Gray-Headed Juncos. I have seen one or two Slate-Colored Juncos, maybe. This is a good example of the Gray-Headed Junco -- the feathers are dark between the bill and eye, there is a distinct brown patch on the back, the cap and wings are mostly gray, and he is lighter in the belly (with very little or no rufous color).