The only warbler that regularly eats seeds, the Pine Warbler will eat millet, cracked corn, sunflower seed, peanuts, and suet from elevated feeders in winter. It may also eat fruits from bushes and vines, like bayberry, flowering dogwood, grape, sumac, persimmon, and Virginia creeper.
Find This Bird
The best way to find Pine Warblers is to narrow them down by habitat and voice. Head for a pine forest in the eastern United States (check a range map for specifics), and then listen for a clear, steady, trilling song. Chipping Sparrows and Dark-eyed Juncos sound very similar and can occur in the same habitats, so be aware you might find these birds instead. Pine Warblers tend to stay high in pines and can be obscured by tufts of needles, but a bit of patience is likely to be rewarded.