A pretty, small bird that flits very quickly. I finally got this photo after carrying my camera around through the snow for days, since I would always see them when I didn’t have a camera with me.
http://www.audubon.org/field-guide/bird/golden-crowned-kinglet
https://ebird.org/view/checklist/S52557768
https://ebird.org/view/checklist/S52934402