sedge warbler

from The Century Dictionary.

• noun An acrocephaline bird; a kind of reed-warbler, specifically Sylvia or Calamoherpe or Salicaria or Acrocephalus phragmitis, or A. schœnobænus, a sedge-bird widely distributed in Europe, Asia, and Africa, about 5 inches long, rufous-brown above and buffy-brown below, frequenting sedgy and reedy places.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun A small European warbler, Acrocephalus schoenobaenus, that winters in sub-Saharan Africa

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun small European warbler that breeds among reeds and wedges and winters in Africa