1: Permanent resident.
2:Wintering species (Sept-April).
3: Migrant passage only- usually spring & fall.
4: Sporadic visitor; from up slope or elsewhere.
5: out of normal range, accidental.
?: status unclear, more data needed.

C: common, seen or heard daily, usually in good numbers.
FC: fairly common, usually seen/heard daily, but in smaller numbers; may be missed.
U: uncommon, Can be seen/heard weekly, but often much less.
R: rare, Seen/heard usually monthly, but in very low numbers and often with local or skulking habits.
VR: very rare, Present in very low densities, and thus rarely observed/heard.
X: occasional, fewer than 5 recorded to date, and not to be expected.