Marsh Warbler: Small, Robin-sized warbler. Dull, olive-brown upperparts with black edging to feathers in wings. Thin, black line through eye and broken, pale brown eye ring and lores. White throat, rest underparts pale buff. Legs yellow-pink. Bill yellow-orange below,and dark grey above. Sexes similar. Immature birds in autumn like summer adults but more red-brown above and on rump, and darker buff below.
Range and Habitat
Marsh Warbler: Former resident breeder, now rare summer breeder in England. Grounds are likely restricted to south-eastern England near Kent. Arrives at breeding grounds in late spring or early summer. Winters in east Africa. Prefers scrub areas of dense vegetation with tall bushes.
Breeding and Nesting
Marsh Warbler: Breeding is late: usually between late May and mid-June. Cup-shaped nest is hidden close to the ground in thick vegetation, often near water. Female builds nest; eggs are laid by early July. Both sexes incubate eggs and care for young. One brood per season fledges in 10 or 11 days.
Foraging and Feeding
Marsh Warbler: Picking through tall rank vegetation in marshes or by rivers, it feeds on small insects, spiders and snails. In the autumn months it will occasionally eat berries.
Marsh Warbler: Burbling combination of variously pitched trills and flute-like sounds. Call is quite variable and may include sounds such as "chirr," "tchak," "tue," "tweek," and "wheet-wheet-wheet."
Marsh Warbler: Reed Warbler has a warm brown tone, rather than olive-brown, and is darker overall.