Birds include mallard, coot, red warbler and sedge warbler. The sedge warbler is mostly insectivorous. Grasshopper warbler and sedge warbler breed on the small ponds. Reed warbler, reed bunting and sedge warbler breed on the reserve. Turtle dove, reed bunting and sedge warbler breed in the adjoining Osier bed. Unlike the sedge warbler, it does not sing in flight. The sedge warbler assembles an effectively infinite number of songs by assembling phrases in combination. Also seen was two sedge warbler ("Acrocephalus schoenobaenus") and four willow warbler ("Phylloscopus trochilus"). The sedge warbler ("Acrocephalus schoenobaenus") is an Old World warbler in the genus "Acrocephalus".