A warbler that doesn’t act like one, the Palm Warbler spends its time walking on the ground, wagging its tail up and down. This brownish-olive bird has a bright rusty cap and a bold pale eyebrow stripe. They breed mainly in Canada’s boreal forest, but most people see them during migration or on wintering grounds foraging in open areas. You may see two forms: an eastern subspecies that’s bright yellow below, and a more western subspecies with a pale belly.