Tho this bird's song is more finished than the Brook Warbler's, it has the same ringing quality, and motacilla gives its ecstatic flight song more frequently. It seems to be less attached to the vicinity of running streams and I have often seen individuals among the swampy ground in brackish water at head of salt marshes.
New Lots on Long Island was once a favorite nesting place and for years two or three pairs kept house at the head of the old Vanderveer Creek.
NEST: Composed of muddy leaf foundation with small twigs, grass and skeleton leaves, lined with fine grass, sometimes with a pathway of old leaves leading to the entrance.
Eastern North America, west to Nebraska, Michigan and Minnesota, south to Gulf States.