Blue-throated Brown Sunbird

The largest gull in the world. Huge, bulky, and large-billed. Adults have dark black backs and pale pink legs. Nonbreeding adults have very limited streaking on the head. Takes four years for immatures to reach adult plumage; intermediate plumages are often mottled and messy. Tends to look colder-toned overall, with more checkered upperparts and a whiter head than other immature gulls. Always note large size and thick bill. Most common along the coasts of the northeastern U.S. and Europe, but also occurs on large lakes (especially the Great Lakes). Often gathers in mixed flocks with other large gulls on beaches and mudflats.

Plump, medium-sized shorebird with very long bill. Extremely similar to Long-billed Dowitcher, and often flocks with it. Best distinguished by voice: a rapid series of notes, “tu-tu-tu”, lower-pitched and almost always in a series, unlike single piercing “keek!” of Long-billed. At all ages, look for subtle structural differences: Short-billed averages flatter-backed, slightly shorter-billed, and slightly shorter, especially noticeable when in a mixed flock. Breeding birds are intricately patterned with a variable amount of orange on the underparts. Short-billed usually has some white on the belly, and paler upperparts with bolder golden and white markings. Also look for messy and extensive spotting on sides, not sparsely barred like Long-billed Dowitcher. Nonbreeding plumage is brownish-gray overall with a paler belly; extremely similar to Long-billed but averaging slightly paler and more patterned, especially on the breast and sides. Juveniles are easiest to identify: look for bright golden markings on the tertials and scapulars. Short-billed breeds in grassy wetlands and tundra, and can be found in a variety of wetland habitats in migration and winter. A very early fall migrant, with southbound birds appearing in the U.S. by late June. Usually in flocks, feeding actively like a sewing machine. Tends to favor saltwater marshes, beaches, and mudflats. Somewhat less likely in freshwater habitats than Long-billed, but much overlap, especially the hendersoni subspecies that migrates primarily through the center of the continent.

Rather dull buffy ground-dwelling bird with a large but disjunct range from Panama to Argentina. Streaky brown above and paler below with a streaked breast and plain belly. Note long pinkish legs and white outer tail feathers. Found in any flat open habitat including savannah, agricultural areas, and desert. Most often seen on the ground, occasionally perched up on a small shrub or fence. The only pipit in most of its range. Listen for the distinctive song, a few tick notes followed by a long descending buzzy “tzeeeeeeew,” often given in flight.