Willow Warbler
Willow Warbler
Willow Warbler
Willow Warbler
Willow Warbler
Willow Warbler

Willow Warbler

Phylloscopus trochilus

Song Noé Ferrari

Mass

~9 g

Habitat

Forests

Diet

Insects and invertebrates

How to recognize it

Smaller than a sparrow, slim leaf-warbler shape
Upperparts greenish-olive, underparts pale with yellow wash
Long pale eyebrow, dark line through the eye
Pale legs, no wingbars; call a high thin whistle

The Willow Warbler is a small, restless canopy songster best noticed by its light, quick movements rather than by a bold appearance. It slips through leaves and branches with an easy, delicate way of moving that makes it hard to keep in view.

Males sing from the trees and mix singing with foraging. Its voice is thin and clear, with a short, descending whistle that sounds soft and simple once you get used to it.

It favors open, not-too-dense woods, parks, gardens, and other damp places with low cover. It feeds mainly on insects and their larvae, but also takes spiders, snails, berries, and fruit, and almost the whole population moves to sub-Saharan Africa for winter.

I saw it today!