Palm Warblers are among the last warblers to migrate through New England in fall (with some lingering into November) and among the first warblers to be seen in spring. They reach the northeast in red-capped breeding plumage (see below) in April around the time when Yellow-rumped and Pine Warblers return. Their habits of tail-flicking and feeding close to the ground in open or semi-open areas mean that they're among the easier warblers to spot.
Palm Warblers have two recognized subspecies: the "Western" Palm and the "Yellow" Palm. Westerns have whitish bellies (rather than yellow) and tend to pass through New England earlier in fall than Yellows. With few exceptions, Westerns don't pass through New England in spring. The birds pictured here are all "Yellow" Palm Warblers. (To view the following images in full-size, click here.)