Willow Warbler
Phylloscopus trochilus
Where is it found?
Woodland, heathland and scrubland
Diet and foraging method
Key adaptations
Plumage colours provide excellent camouflage in woodlands and also in flight, as their white belly and darker top provides camouflage from above and below.
Social organisation and mating system
Solitary
Form pairs that exhibit promicuity or polygyny.
Did you know that...?
Willow warblers can fly up to 100km a day; that's a long way for a small bird to fly! They endure these long-haul flights to complete their migration from Europe to Sub-Saharan Africa as quickly as possible.
Taxonomy
Maps from: http://species.mol.org/species/
"Flickr - Rainbirder - Willow Warbler (Phylloscopus trochilus)" by Steve Garvie from Dunfermline, Fife, Scotland - Willow Warbler (Phylloscopus trochilus). Licensed under CC BY-SA 2.0 via Wikimedia Commons - https://commons.wikimedia.org/wiki/File:Flickr_-_Rainbirder_-_Willow_Warbler_(Phylloscopus_trochilus).jpg#/media/File:Flickr_-_Rainbirder_-_Willow_Warbler_(Phylloscopus_trochilus).jpg
"Willow Warbler Phylloscopus trochilus" by Andreas Trepte - Own work. Licensed under CC BY-SA 2.5 via Wikimedia Commons - https://commons.wikimedia.org/wiki/File:Willow_Warbler_Phylloscopus_trochilus.jpg#/media/File:Willow_Warbler_Phylloscopus_trochilus.jpg
"Phylloscopus trochilus eggs" by Notafly - Own work. Licensed under CC BY-SA 3.0 via Wikimedia Commons - https://commons.wikimedia.org/wiki/File:Phylloscopus_trochilus_eggs.JPG#/media/File:Phylloscopus_trochilus_eggs.JPG
"Lövsångarungar0001" by Hangsna - Own work. Licensed under CC BY-SA 4.0 via Wikimedia Commons - https://commons.wikimedia.org/wiki/File:L%C3%B6vs%C3%A5ngarungar0001.jpg#/media/File:L%C3%B6vs%C3%A5ngarungar0001.jpg
"Phylloscopus trochilus vogelartinfo chris romeiks CHR4730" by Vogelartinfo - Own work. Licensed under GFDL 1.2 via Wikimedia Commons - https://commons.wikimedia.org/wiki/File:Phylloscopus_trochilus_vogelartinfo_chris_romeiks_CHR4730.jpg#/media/File:Phylloscopus_trochilus_vogelartinfo_chris_romeiks_CHR4730.jpg
"Willow Warbler Grönvold" by Illustration by Henrik Grönvold (d. 1940); in a book by Arthur Gardiner Butler (d. 1925) - Birds of Great Britain and Ireland, Order Passeres, vol. I, plate 26. Licensed under Public Domain via Wikimedia Commons - https://commons.wikimedia.org/wiki/File:Willow_Warbler_Gr%C3%B6nvold.jpg#/media/File:Willow_Warbler_Gr%C3%B6nvold.jpg
"Flickr - Rainbirder - Willow Warbler (Phylloscopus trochilus)" by Steve Garvie from Dunfermline, Fife, Scotland - Willow Warbler (Phylloscopus trochilus). Licensed under CC BY-SA 2.0 via Wikimedia Commons - https://commons.wikimedia.org/wiki/File:Flickr_-_Rainbirder_-_Willow_Warbler_(Phylloscopus_trochilus).jpg#/media/File:Flickr_-_Rainbirder_-_Willow_Warbler_(Phylloscopus_trochilus).jpg
"Willow Warbler Phylloscopus trochilus" by Andreas Trepte - Own work. Licensed under CC BY-SA 2.5 via Wikimedia Commons - https://commons.wikimedia.org/wiki/File:Willow_Warbler_Phylloscopus_trochilus.jpg#/media/File:Willow_Warbler_Phylloscopus_trochilus.jpg
"Phylloscopus trochilus eggs" by Notafly - Own work. Licensed under CC BY-SA 3.0 via Wikimedia Commons - https://commons.wikimedia.org/wiki/File:Phylloscopus_trochilus_eggs.JPG#/media/File:Phylloscopus_trochilus_eggs.JPG
"Lövsångarungar0001" by Hangsna - Own work. Licensed under CC BY-SA 4.0 via Wikimedia Commons - https://commons.wikimedia.org/wiki/File:L%C3%B6vs%C3%A5ngarungar0001.jpg#/media/File:L%C3%B6vs%C3%A5ngarungar0001.jpg
"Phylloscopus trochilus vogelartinfo chris romeiks CHR4730" by Vogelartinfo - Own work. Licensed under GFDL 1.2 via Wikimedia Commons - https://commons.wikimedia.org/wiki/File:Phylloscopus_trochilus_vogelartinfo_chris_romeiks_CHR4730.jpg#/media/File:Phylloscopus_trochilus_vogelartinfo_chris_romeiks_CHR4730.jpg
"Willow Warbler Grönvold" by Illustration by Henrik Grönvold (d. 1940); in a book by Arthur Gardiner Butler (d. 1925) - Birds of Great Britain and Ireland, Order Passeres, vol. I, plate 26. Licensed under Public Domain via Wikimedia Commons - https://commons.wikimedia.org/wiki/File:Willow_Warbler_Gr%C3%B6nvold.jpg#/media/File:Willow_Warbler_Gr%C3%B6nvold.jpg