Puff-throated Bulbul

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.

A medium-sized brown seedeater. Note the boldly marked face with a dark crown, a white eyebrow, and a broad dark-brown patch through the eye. The underparts lack streaking, but may show some brown blotching. Found in woodland, scrub, and cultivated areas. Often in pairs or small flocks. Similar to Reichard's Seedeater, but there is little overlap in range, and West African is easily separated by the unstreaked underparts. Somewhat similar to White-rumped Seedeater, but lacks a white rump, and has a strong facial pattern and unstreaked underparts. Gives a pretty, musical up-and-down song of whistles and trills which also sometimes includes imitations of other birds.

The largest of the six prion species, with an exceptionally wide bill that gives the head a chunky appearance. Occurs in dispersed flocks at sea, where it catches prey items either sitting on the water or skimming the surface for zooplankton. Can be seen around breeding colonies on the Chatham Islands, in southern New Zealand, and in the South Atlantic Ocean. The wide bill distinguishes this species from other prions apart from Salvin’s and MacGillivray's, which are smaller in overall size and have a narrower bill than the Broad-billed Prion. However this can be hard to see at sea, and identification of prions is often impossible without a good view or photograph.