What is "sedge warbler"

Sedge \Sedge\, n. [OE. segge, AS. secg; akin to LG. segge; -- probably named from its bladelike appearance, and akin to L. secare to cut, E. saw a cutting instrument; cf. Ir. seisg, W. hesg. Cf. Hassock, Saw the instrument.]

1. (Bot.) Any plant of the genus Carex, perennial, endogenous, innutritious herbs, often growing in dense tufts in marshy places. They have triangular jointless stems, a spiked inflorescence, and long grasslike leaves which are usually rough on the margins and midrib. There are several hundred species.

   Note: The name is sometimes given to any other plant of the order Cyperace[ae], which includes Carex, Cyperus, Scirpus, and many other genera of rushlike plants.

2. (Zo["o]l.) A flock of herons.

   Sedge hen (Zo["o]l.), the clapper rail. See under 5th Rail.

   Sedge warbler (Zo["o]l.), a small European singing bird ( Acrocephalus phragmitis). It often builds its nest among reeds; -- called also sedge bird, sedge wren, night warbler, and Scotch nightingale.

n. A small European warbler, (taxlink Acrocephalus schoenobaenus species noshow=1), that winters in sub-Saharan Africa

n. small European warbler that breeds among reeds and wedges and winters in Africa [syn: sedge bird, sedge wren, reedbird, Acrocephalus schoenobaenus]

The sedge warbler (Acrocephalus schoenobaenus) is an Old World warbler in the genus Acrocephalus. It is a medium-sized warbler with a brown, streaked back and wings and a distinct pale supercilium. Sedge warblers are migratory, crossing the Sahara to get from their European and Asian breeding grounds to spend winter in Africa. The male's song is composed of random chattering phrases and can include mimicry of other species. The sedge warbler is mostly insectivorous.