Not uncommon summer resident
May - September
Common summer resident in all woods, and still more common transient in May and September; arrives April (20, 21, 23) 25, departs October 14 (21, 28). —Bagg & Eliot
April - October
Often not heard before mid-May or after late summer; arrives late April and early May, departs late September. —Mass Audubon
April - September
—H.L. Clark, 1887
Near threatened*