Australian Reed Warbler

Overview

The Australian reed warbler (Acrocephalus australis) is an acrocephalid warbler and the only species of Acrocephalus native to Australia. It is also observed in Papua New Guinea and nearby islands.

Identification

• Appears long (15–18 cm), slender and plain with drab brown plumage that varies with wear, featuring russet brown upperparts and duller rufous underparts.
• Long and thin bill (17-23 mm) that is slightly decurved with a slight hook at the tip.
• Tarsus and feet appear long compared to a short, feathered tibia.
• Song is a loud, varied, sweet melodious warble with rich fluty and hard metallic notes, often delivered with the crown feathers raised.

Habitat

Found in a wide range of natural and man-made wetlands, including fresh, brackish and saltwater environments. Prefers dense vegetation with vertical structures such as reeds, reedmace, and rushes, and is occasionally observed in shrublands and riparian woodlands surrounding water bodies.

Diet

Forages mainly individually, but sometimes in pairs, on insects, spiders, and occasionally molluscs and seeds. It gleans arthropods from dense riparian vegetation, surrounding shrubs, and woodlands, and sometimes forages on open mud near reeds and rushes.

Did you know?

Unlike all other Acrocephalus species which are sedentary, the Australian reed warbler migrates seasonally to breed. During courtship, males build distinct, non-functional nest-like structures that lack the strength and shape required for eggs and chicks.