Thick-billed Warbler - BirdForum Opus

Alternative name: Thick-billed Reed Warbler

Photo by rockfowl
Beidaihe, Hebei, China, May 2005

Arundinax aedon

Acrocephalus aedon, Phragmaticola aedon, Phragamaticola aedon, Iduna aedon

Identification

16-17.5 cm

• Unstreaked brown back
• Buff underparts
• Rounded forehead
• Short pointed bill
  

Young birds are rich buff below
Sexes are identical

Distribution

Asia: found in Russia, Siberia, Mongolia, China, Tibet, Nepal, India, Andaman and Nicobar Islands, Eastern and Western Himalayas, Bhutan and Hong Kong
Southeast Asia: Indochina, Myanmar, Laos, Vietnam, Cambodia, Thailand and Indonesia

Taxonomy

Formerly placed in genus Acrocephalus and Iduna, and sometimes Phragmaticola [also spelt Phragamaticola].

Subspecies

There are 2 subspecies^[1]:

• A. a. aedon:

• Southern Siberia to western Mongolia; winters to Myanmar, Thailand, Indonesia

• A. a. rufescens:

• Eastern Siberia to Mongolia; winters to south-eastern China, Thailand and Indochina

Habitat

Dense vegetation such as reeds, bushes and thick undergrowth; coastal scrub.

Behaviour

Breeding

The nest is built into a low tree. The clutch consists of 5-6 eggs.

Diet

The diet includes insects but it will take other small prey.

References

1. Clements, J. F., T. S. Schulenberg, M. J. Iliff, B.L. Sullivan, C. L. Wood, and D. Roberson. 2013. The eBird/Clements checklist of birds of the world: Version 6.8., with updates to August 2013. Downloaded from http://www.birds.cornell.edu/clementschecklist/download/
2. Avibase
3. Wikipedia

• List of references

Recommended Citation

• BirdForum Opus contributors. (2025) Thick-billed Warbler. In: BirdForum, the forum for wild birds and birding. Retrieved 3 May 2025 from https://www.birdforum.net/opus/Thick-billed_Warbler

External Links

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