Marsh Wren
Cistothorus palustris
Synopsis: Nests in cattail marshes at widely scattered locations.

Habitat Associations:
strongest
Edges of Freshwater Marsh (17793 acres)
some
Lake/Pond Shoreline & Islands (493299 acres)
lesser
Wet Montane Meadow (1289 acres)
Streamside/Wetland Shrubland (2171 acres)

Relative Detectability: Fairly easy to detect by chattering song. Difficult to confirm nesting due to habit of building multiple unused ("dummy") nests.

Challenge: Determine presence in wetlands near Columbia River east of the Cascades, and in the Umpqua Valley.