Phylloscopus trochiloides
The Greenish Warbler (*Phylloscopus trochiloides*) is a diminutive and sprightly Old World warbler, renowned more for its evolutionary significance than its muted plumage. Measuring a mere 10-11.5 cm in length and weighing 7-9 grams, it sports greenish-grey upperparts, a pale, often yellowish, underside, and a distinctive pale supercilium above a dark eye-stripe. A key identification feature is the presence of one or two prominent pale wing bars, which vary geographically across its subspecie...
Primarily inhabiting coniferous, deciduous, and mixed broadleaf forests, woodlands, and groves, often near water sources, the Greenish Warbler can be found from lowlands up to subalpine elevations.
The Greenish Warbler is primarily insectivorous, consuming small insects, their larvae, and spiders, which it gleans from leaves and twigs or occasionally catches in short aerial sallies.
Highly active and ceaselessly inquisitive, the Greenish Warbler forages constantly, flitting and gleaning small insects from the foliage of trees and shrubs with remarkable agility. Males establish and defend territories with vigorous, repetitive songs, often delivered from a prominent perch high...
The Greenish Warbler boasts an expansive breeding range stretching across much of Central and Eastern Asia. It extends from the Ural Mountains in Eastern Europe, through vast swathes of Siberia, Kazakhstan, and Mongolia, eastwards into China, and south into the Himalayas. During the non-breeding ...
Least Concern
- The Greenish Warbler is one of the most famous examples of a "ring species" in evolutionary biology, where populations form a continuous ring, but the two ends of the ring, where they meet, are reproductively isolated. - Its vast range across Eurasia makes it one of the most widespread Old Worl...