Uluguru Mountain Greenbul

Scarce arboreal antbird found in cloud forest along the east slope of the Andes. Its brown and buff plumage, facial pattern, and behavior make it much more likely to be confused with a foliage-gleaner than with other antbirds, but note the stout bill with a hooked tip. Found at middle levels of the forest, and usually encountered with mixed-species flocks. Gives a series of about 8 shrill whistles as well as a faster, rising chatter. No overlap with Russet Antshrike, from which this species was recently split.

One of the largest and rarest warblers. Breeds only in young jack pine forests in northern Michigan and Wisconsin. Winters in the Bahamas; seldom seen in migration. Blue-gray above and lemon-yellow below with broken white eye-ring, thin white wingbars, and black spotting on sides. Female slightly browner than male. Constantly pumps tail up and down. Most similar to drab female or immature Magnolia Warbler but larger with gray (not greenish) back and tail-pumping behavior. Also compare with Canada Warbler, which has bold black streaks across breast and bold yellow spectacles.

Chunky, skulking warbler that favors dense undergrowth. Yellow below and olive above with blue-gray head and chest. Blacker lores set off distinctive white arcs above and below eye. Adult males show darkest head; females and immatures have paler gray head and whitish throat. Found in thickets, clearcuts, open mixed forests, and riparian zones. Breeds primarily in mountainous regions of western North America; winters from Mexico to Costa Rica. Compare with Mourning Warbler, but little range overlap, and note longer tail and white eye-arcs on MacGillivray’s.