Family Reed-warblers (Acrocephalidae)

Data Deficient

Large-billed Reed-warbler (Acrocephalus orinus)


Taxonomy

French: Rousserolle à grand bec German: Großschnabel-Rohrsänger Spanish: Carricero picudo
Taxonomy:

Acrocephalus orinus

Oberholser

, 1905,

Himachal Pradesh, India

.

Until recently known only from type specimen, which had been variously suggested to represent an isolated population of A. stentoreus, a hybrid with A. dumetorum, or an aberrant A. dumetorum. However, re-examination of its morphology and mitochondrial DNA supports treatment as a separate species#R. Subsequently, three individuals were captured in Thailand in 2006–2008#R and at least 27 specimens have been discovered in museums, erroneously labelled as A. dumetorum#R#R. Monotypic.

Distribution:

Breeding range apparently extends from SE Kazakhstan to NE Afghanistan, through Tajikistan and parts of E Uzbekistan and Kyrgyzstan, in mountainous areas at 900–3000 m#R#R#R. Wintering grounds not established but recorded in N India, Myanmar and Thailand#R.

Descriptive notes

13–14 cm; 10·9 g (n = 1). Medium-sized reed-warbler with noticeably large and strong bill, long narrow tail with pointed feathers, rounded wingtip. Has... read more

Voice

Song similar to Blyth’s Reed Warbler.

Habitat

Breeds in thickets of sea-buckthorn (Hippophae rhamnoides) and willows (Salix spp... read more

Food and feeding

No information.

Breeding

The sole existing study was conducted in S Tajikistan. Monogamous, although attempted extra-pair copulations observed. Nest constructed by... read more

Movements

Summer visitor to Central Asia, noted in Tajikistan from late May to Sept. Recorded in N Pakistan... read more

Status and conservation

Data Deficient. Until very recently known only from the type specimen, collected in the Sutlej Valley, near Rampur, Himachal Pradesh, N India, in Nov 1867. In Mar 2006, one... read more

Recommended citation

Dyrcz, A., de Juana, E. & Kirwan, G.M. (2019). Large-billed Reed-warbler (Acrocephalus orinus). In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. (retrieved from https://www.hbw.com/node/58807 on 23 February 2019).