Pine Warbler

The Pine Warbler is a somewhat plain but attractively soft-toned warbler that, true to its name, is found almost exclusively in pine-dominated woodlands throughout its range. Males show olive-yellow upperparts, a yellow throat and breast with faint blurry streaking, and white belly and undertail coverts, along with two bold white wingbars on gray-olive wings.

Females and immatures are duller and grayer overall, sometimes lacking much yellow at all. Unlike most warblers, which rely almost entirely on insects, Pine Warblers regularly eat pine seeds and other plant material, allowing some populations to remain resident year-round in the southeastern United States and occasionally visit backyard feeders offering suet or seed.

Key Field Marks

• Olive-yellow upperparts, unstreaked back
• Yellow throat and breast with faint, blurry (not sharp) streaking
• White belly and undertail coverts
• Two bold white wingbars on grayish wings
• Relatively heavy bill and stocky build compared to many warblers

Similar Species

Blackpoll and Bay-breasted Warblers in fall plumage can resemble Pine Warbler but show finer, sharper streaking and different leg color (Blackpoll has pale legs); Pine Warbler's blurry, indistinct streaking and dark legs help separate it. Yellow-throated Vireo has a heavier, hooked bill and bold yellow spectacles rather than the Pine Warbler's thin warbler bill and plainer face.

Habitat

As its name suggests, this species is closely tied to pine and pine-dominated woodlands, including pine plantations, and is rarely found far from pine trees at any season.

Range

Pine Warblers breed across the eastern United States and southeastern Canada, wherever suitable pine forest occurs. Many southeastern populations are year-round residents, while northern breeders migrate south for winter.

Migration

This species is a short-distance migrant; northern populations move south in winter, generally to the southeastern United States, while resident populations in the Southeast remain in place throughout the year.

Behavior

Pine Warblers forage methodically through pine foliage, often moving more slowly and deliberately than many other warblers, and sometimes creep along branches somewhat like a Black-and-white Warbler.

Voice

The song is a musical, sweet trill, all on one pitch, similar to a Chipping Sparrow's trill but generally richer and more musical. The call is a soft 'chip.'

Feeding

It gleans insects and spiders from pine needles and bark, and regularly supplements its diet with pine seeds and other plant material, particularly in winter, occasionally visiting feeders for suet or sunflower seed.

Nesting & Breeding

The female builds a well-concealed cup nest high in a pine tree, typically far out on a horizontal branch amid dense needle clusters. She lays 3-5 eggs.