Location in Oregon
Blue is Winter range - Red is Summer range
Purple is Year-round range - Yellow is Migration range

Ruby-crowned Kinglet

Regulus calendula - Common. Told from Golden-crowned by eye ring, and from vireos or fall warblers by its smaller size, short tail, and kinglet habit of flicking its wings. Ruby crown of male may be concealed. Often hovers very briefly; prefers conifers, Gives a low-pitched, short, 2-note scalding call. Song is high and weak at the beginning and end, but has very loud ascending triplets in the middle.