Leaf warbler

Leaf warblers
Willow warbler (Phylloscopus trochilus)
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Aves
Order:	Passeriformes
Superfamily:	Sylvioidea
Family:	Phylloscopidae Alström, Ericson, Olsson, & Sundberg, 2006
Genus:	Phylloscopus F. Boie, 1826
Type species
Sylvia trochilus[1] = Motacilla trochilus Latham, 1790
Species
See text

Leaf warblers are small insectivorous passerine birds belonging to the genus Phylloscopus.

Leaf warblers were formerly included in the Old World warbler family but are now considered to belong to the family Phylloscopidae, introduced in 2006. The family originally included the genus Seicercus, but all species have been moved to Phylloscopus in the most recent classification. Leaf warblers are active, constantly moving, often flicking their wings as they glean the foliage for insects along the branches of trees and bushes. They forage at various levels within forests, from the top canopy to the understorey. Most of the species are markedly territorial both in their summer and winter quarters. Most are greenish or brownish above and off-white or yellowish below. Compared to some other "warblers", their songs are very simple. Species breeding in temperate regions are usually strongly migratory.