Arundinax aedon
The Thick-billed Warbler, *Arundinax aedon*, is a robust, medium-sized Old World warbler measuring approximately 16-17.5 cm (6.3-6.9 inches) in length and weighing 20-30 grams. Its plumage is strikingly plain, characterized by olive-brown upperparts and creamy-white underparts, giving it a somewhat nondescript appearance often described as "drab." Distinctive field marks include a broad, heavy bill that is pale at the base of the lower mandible, a faint pale supercilium above a dark eye-strip...
This warbler primarily inhabits dense scrub, thickets, reeds, bamboo, and undergrowth in deciduous or mixed forests, often near water sources, typically at low elevations.
Primarily insectivorous, consuming a wide variety of arthropods such as beetles, caterpillars, flies, and spiders, usually gleaned from foliage and stems.
The Thick-billed Warbler is a notoriously skulking species, spending most of its time hidden deep within dense vegetation, making it more often heard than seen. It is diurnal, actively foraging during the day, though specific roosting habits are not widely detailed beyond seeking dense cover. For...
The breeding range of the Thick-billed Warbler extends across a vast swathe of eastern Palearctic Asia, from central Siberia eastward through Transbaikalia, Mongolia, and the Russian Far East to northern Northeast China, and North Korea. Breeding occurs predominantly in lowland areas, particularl...
Least Concern
- Despite its drab plumage, the Thick-billed Warbler possesses one of the most powerful and melodious songs among Old World warblers, often heard more than the bird is seen. - Its scientific name, *Arundinax aedon*, translates roughly to "reed singer" (*Arundinax*) and "nightingale" (*aedon*), a ...