


Australian Reed Warbler
Acrocephalus australis


Acrocephalus australis
The Australian Reed Warbler is a secretive wetland songbird found throughout Australia and sometimes seen in Papua New Guinea and nearby islands; where it spends much of its time hidden among dense reeds and rushes. While often difficult to spot, its vibrant, varied song is a familiar sound in wetlands and lake margins during the warmer months.
1. Uniform brown upperparts and pale underparts with no streaking
2. Long, slender bill and flat crown
3. Loud, complex song often heard before the bird is seen
These birds feed mainly on insects and spiders, foraging among reeds and occasionally in nearby shrubs or mudflats. Southern populations migrate northward for winter, while northern birds are mostly resident. Breeding occurs from September to December in southern Australia and from October to December in the southeast. Both parents build a deep cup-shaped nest between reed stems, though females contribute more to construction. Females incubate 2–4 eggs for 13–15 days, and both parents feed the chicks, which fledge after about 1–13 days. Parents continue to care for fledglings for several weeks.
Australian Reed Warblers inhabit a wide range of wetlands across Australia, including freshwater and brackish swamps, lake edges, reed beds, and even urban ponds with dense vegetation. They are most often detected by their song, as they typically remain hidden within reeds and rushes, rarely venturing far from dense cover. During the breeding season, listen for their calls in the early morning and late afternoon.
16 cm
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