Synonyms for Sedge Wren (same or very similar meaning)
WordNet sense 1 (small American wren inhabiting wet sedgy meadows):
Cistothorus platensis, short-billed marsh wrenWordNet sense 2 (small European warbler that breeds among reeds and wedges and winters in Africa):
reedbird, sedge warbler, Acrocephalus schoenobaenus, sedge birdFrom the ODE community, based on WordNetadd/edit