Birds of Hemlock Ravine SNA

The seasons in the guide are defined as follows:
Sp (Spring) = March, April, May
Su (Summer) = June, July
Fa (Fall) = August, September, October, November
Wi (Winter) = December, January, February

Abundance codes are defined as follows:
C = Common — present, relatively easy to find
U = Uncommon — observed, may be difficult to find
O = Occasional — may or may not be present in any year
R = Rare — has occurred at least once, may recur less ↑