The willow warbler is a very common and widespread leaf warbler which breeds throughout northern and temperate Europe and the Palearctic, from Ireland east to the Anadyr River basin in eastern Siberia. It is strongly migratory, with almost all of the population wintering in sub-Saharan Africa.
Willow warbler
Egg, Collection Museum Wiesbaden, Germany
Image: Willow Warbler
Leaf warblers are small insectivorous passerine birds belonging to the genus Phylloscopus.
Leaf warbler
Illustration of Phylloscopus bonelli, Phylloscopus coronatus, Phylloscopus trochilus, Phylloscopus sibilatrix by John Gerrard Keulemans