About the Western Bonelli's Warbler
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
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ID tip
Western Bonelli's warbler is a small passerine bird, found in forest and woodland. Four to six eggs are laid in a nest on the ground. The eggs are white with reddish-brown markings and are laid in clutches of 3-5 eggs. The incubation period is around 14 days long, and the chicks fledge after 10-14 days. Cuckoo nest predation and brood parasitism are major hazards to the breeding success of western Bonelli's warblers. Like most warblers, western Bonelli's warbler is insectivorous. The adult has a plain grey-green back, green-toned rump and wings and whitish underparts.
Text from Wikipedia, licensed CC BY-SA 4.0.
What the Western Bonelli's Warbler sounds like
Where the Western Bonelli's Warbler lives
Recorded as a rare visitor in Netherlands, Finland, Israel, Czechia, Croatia, Mali.
When to see the Western Bonelli's Warbler
Peak activity in May · a summer visitor species across most of its range
Easily confused with
Greenish WarblerPhylloscopus trochiloidesThe greenish warbler is a widespread leaf warbler with a breeding range in northeastern Europe, and temperate to subtropical continental Asia.
Yellow-browed WarblerPhylloscopus inornatusThis is one of the smaller Old World warblers, at 9.5–11 cm long and weighing 4–9 g distinctly smaller than a chiffchaff but slightly larger than Pallas's leaf warbler.
Dusky WarblerPhylloscopus fuscatusThe dusky warbler is a leaf warbler which breeds in the east Palearctic.
Side by side: Western Bonelli's Warbler vs Yellow-browed Warbler
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