The sexes are identical in appearance.
It is similar to Sedge Warbler, but has a white stripe in the centre of its crown, which is bordered on both sides by black streaks. There is a noticeable white line over the eye. The plumage of the upperparts is brown, but in comparison to Sedge Warbler it is more sandy-coloured and has a more contrasting pattern of dark and bright streaks. The rump has a coppery tinge with brown streaks. The underparts are pale, with a finely streaked breast and sides.
Average size:
-
length
13 cm
(
5 in
.)
-
wingspan
19 cm
(
7,5 in
.)
-
weight
12 g
Biotope
The species has very specific habitat requirements. It inhabits fertile peat bogs and extensive marshy meadows covered with sedges and few bushes. It also inhabits areas flooded up to 10-15 cm (4-6 in.) in depth.
Nest
Similar in size and location to that of Sedge Warbler, well concealed in vegetation and always several centimetres above the land or water surface. The male is polygamous and does not take care of the young, this is why some males leave their breeding areas as early as the beginning of July.
Eggs
Very similar to Sedge Warbler. Average size 16x12 mm (0,65x0,5 in.), normally 5 or 6 and laid in the middle of May. Some birds lay a second clutch in June.
Incubation and fledging
Incubation lasts about 14 days after the last egg has been laid. The young leave the nest after 18 days.
Food
Exclusively small invertebrates (mainly spiders and insects).
Protection
A protected species.
