Phylloscopus schwarzi
The Radde's Warbler, Phylloscopus schwarzi, is a petite, enigmatic songbird, highly sought after by birders due to its elusive nature and occasional vagrancy. Measuring a mere 11-12.5 cm (4.3-4.9 inches) in length and weighing 8-14 g (0.28-0.49 oz), it sports a rather plain olive-brown plumage on its upperparts, contrasting with dingy whitish to yellowish-buff underparts. Key identification marks include a prominent pale creamy-yellow supercilium, often extending behind the eye, bordered by a...
This warbler prefers dense undergrowth, scrub, willow thickets, and the edges of forests, often near water bodies, typically found in low to mid-elevation taiga and mixed woodlands.
Primarily insectivorous, feeding on small insects and their larvae, as well as spiders, gleaned from foliage and low vegetation.
Radde's Warbler is notoriously skulking and difficult to observe, often remaining hidden deep within vegetation. It is a diurnal species, spending its active hours foraging low to the ground. Foraging involves meticulously gleaning small insects and spiders from leaves, twigs, and bark, with freq...
The breeding range of Radde's Warbler spans across Central and Eastern Asia, extending from the Yenisei River in central Siberia eastward through northern Mongolia, northeastern China, and the Russian Far East to Chukotka and Sakhalin Island. Following the breeding season, these warblers embark o...
Least Concern
- Radde's Warbler was named after Gustav Radde, a German naturalist and explorer, who collected the first specimens in the mid-19th century. - It is a classic 'birder's bird' in Western Europe and North America, highly prized for its extreme rarity as a vagrant, often leading to excited chases wh...