Leaf-warblers are small insectivorous birds belonging to the genus Phylloscopus. This was placed in the "wastebin" Old World warbler family, but is now moved into a new family Phylloscopidae (Alström et al. 2006). There are presently some 55 species in the genus, but this composition makes it polyphyletic with regards to Seicercus. Thus, several species will soon be moved out of the present genus. These are active, constantly moving, warblers always associated with trees, though normally i… (More on Leaf-warbler)