Summer
: Breeds.
Fairly common
but secretive late May-early Aug in salt marshes. Bass Harbor Marsh usually hosts several pairs but they breed as well in smaller marshes such as Babson Creek Preserve, on Loapus Point and even Great Duck Island.
Migration
:
Casual
but hard to detect late May-mid Jun and again mid Sep-mid Oct with
outliers
to mid Nov.
Miscellany: Male Sharp-tailed Sparrow's hissy song is the best way to locate the species. Listen here.