western Bonelli's warbler

{{Short description|Species of bird}}

{{Speciesbox

| name = Western Bonelli's warbler

| image = Phylloscopus_bonelli_in_the_wild.jpg

| image_upright = 1.2

| image_caption =

| status = LC

| status_system = IUCN3.1

| status_ref = {{cite iucn |author=BirdLife International. |year=2016 |title=Phylloscopus bonelli |volume=2016 |page=e.T22715255A87665883 |doi=10.2305/IUCN.UK.2016-3.RLTS.T22715255A87665883.en |access-date=7 October 2021}}

| genus = Phylloscopus

| species = bonelli

| authority = (Vieillot, 1819)

| range_map = PhylloscopusBonelliIUCN.svg

| range_map_caption = Range of P. bonelli{{leftlegend|#00FF00|Breeding|outline=gray}} {{leftlegend|#00FFFF|Passage|outline=gray}} {{leftlegend|#007FFF|Non-breeding|outline=gray}}

}}

The western Bonelli's warbler (Phylloscopus bonelli) 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:Parkin, David T. (2003): Birding and DNA: species for the new millennium. Bird Study 50(3): 223–242. [http://www.ingentaconnect.com/content/bto/bird/2003/00000050/00000003/art00003 HTML abstract]Sangster, George; Knox, Alan G.; Helbig, Andreas J. & Parkin, David T. (2002): "[https://www.doi.org/10.1046/j.0019-1019.2001.00026.x Taxonomic recommendations for European birds.] " Ibis 144(1): 153–159.

• 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

The breeding ranges of the two species do not overlap; while their appearance and songs are very similar, the calls are completely different (see below). They also show marked difference in mtDNA sequence.Helbig, A. J.; Seibold, I.; Martens, J. & Wink, M. (1995): Genetic differentiation and phylogenetic relationships of Bonelli's Warbler Phylloscopus bonelli and Green Warbler P. nitidus. J. Avian Biol. 26: 139–153.

The species is migratory, wintering in sub-Saharan Africa. It is a rare vagrant in Northern Europe.

The genus name Phylloscopus is from Ancient Greek phullon, "leaf", and skopos, "seeker" (from skopeo, "to watch").{{cite book | last= Jobling | first= James A | year= 2010| title= The Helm Dictionary of Scientific Bird Names | url= https://archive.org/details/Helm_Dictionary_of_Scientific_Bird_Names_by_James_A._Jobling | publisher= Christopher Helm | location = London | isbn = 978-1-4081-2501-4 | page = [https://archive.org/details/Helm_Dictionary_of_Scientific_Bird_Names_by_James_A._Jobling/page/n305 305]}} The English name and the specific bonelli are for the Italian ornithologist Franco Andrea Bonelli.{{cite book|last=Beolens|first=Bo|title=Whose Bird? Men and Women Commemorated in the Common Names of Birds|year=2003|publisher=Christopher Helm|location=London|page=59|author2=Watkins, Michael }}