spring - March thru May
summer - June thru August
fall - September thru November
winter - December thru February
C - Common - (Certain to be seen in suitable habitat)
U - Uncommon - (Present, but not certain to be seen)
O - Occasional - (May appear only a few times during a season)
R - Rare - (May not be seen at all during a season)
* - Nests Locally
++ - Threatened/Endangered Species
SOURCE: Salem Audubon Society