Field Guide

Western Bonelli's Warbler

Phylloscopus bonelli

Aves › Passeriformes › Phylloscopidae › Phylloscopus

Conservation status: least_concern

Western Bonelli's Warbler (Phylloscopus bonelli)
Photo: (c) Codrin Bucur, some rights reserved (CC BY), CC BY 4.0, iNaturalist

The western Bonelli's warbler is a warbler in the leaf warbler genus Phylloscopus. It was formerly regarded as the western subspecies of a wider "Bonelli's warbler" species, but as a result of modern taxonomic developments, they are now usually considered to be two species:Western Bonelli's warbler, Phylloscopus bonelli, which breeds in southwest Europe and north Africa Eastern Bonelli's warbler, Phylloscopus orientalis, which breeds in southeast Europe and Asia Minor

How To Identify

A small, streaky warbler characterized by a greenish-yellow wash and faint white spotting on the flanks. Males often exhibit slightly deeper yellowing than females, but overall patterning is subtle and camouflage-like.

Habitat

It inhabits open woodlands, scrubland, and Mediterranean forests with scattered trees and dense understory vegetation.

Behaviour

This warbler is notably active and restless, constantly flitting through vegetation with jerky movements while foraging for small insects and occasionally gleaning from bark and leaves.

Native Range

The Western Bonelli's Warbler is native to southwestern Europe and Africa.

Did You Know?

Western Bonelli's Warbler has a distinctive habit of gleaning insects from foliage while hanging upside down, acrobatically contorting its body in ways that would challenge most other warblers.

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