Pine warbler

These birds have white bellies, white wing bars, dark legs and thin, relatively long pointed bills; they have yellowish lines over their eyes. Adult males have olive upper parts and bright yellow throats and breasts; females and immatures display upper parts which are olive-brown. Their throats and breasts are paler. The song of this bird is a musical trill. Their calls are slurred chips.

They forage slowly on tree trunks and branches by poking their bill into pine cones. These birds also find food by searching for it on the ground. These birds mainly eat insects, seeds, berries and suet. They are the only warbler that eats large quantities of seeds, primarily those of pines. Their nests are deep open cups made of grass, pine needles, twigs, and plant fibers bound together with spider web or caterpillar silk, lined with fine plant parts, hair and feathers. They place their nests near the end of a tree branch, preferably high in a pine tree.