Summer
/
Migration
: Non-breeder.
Uncommon
to
fairly common
offshore
late May-late Sep with a peak late Jul-late Aug and
outliers
from early May and to early Oct. Numbers depend on seasonally and annually variable food supplies.
Casual
from MDI and Schoodic Point.
Miscellany: Bar Harbor whale watch vessels with offshore itineraries visit the best Sooty Shearwater areas.