Black-naped Tern

Unmistakable, but difficult to spot on rock faces. Spectacular in flight, with broad black, red, and white-spotted wings resembling a giant butterfly. Usually found on rock faces in high mountainous regions, but also breeds in steep gorges lower down and can even be found on tall buildings in winter. Breeding male has a black throat; winter males and all females have white throats. Rarely-heard song is a steadily rising whistle.

A mostly yellow bird with a black hood and a red bill. The tail pattern varies geographically; it can be largely plain olive-and-yellow, or it can show black patches. Found in lush woodland and montane forest at middle elevations in the Abyssinian highlands. Very similar to African Black-headed Oriole, but usually separated by habitat and range. Further distinguished by the wing pattern, which is plainer, with a long gray patch, and without bold white feather edgings. Song is a series of slurred, liquid whistles, and calls include raspy notes. 

Medium-sized crested penguin, endemic to New Zealand. Note the thin, vivid yellow eyebrow that droops behind the eye to form a bushy tufted crest. Also look for prominent pale pink skin at the base of its chunky red bill. Breeds in colonies only on the Snare Islands. Adults disperse widely in winter. Vagrants recorded molting around South, Stewart, Chatham, and Subantarctic Islands. Forages in small groups at sea. Distinguished from Fiordland Penguin by conspicuous pale pink skin at the base of the larger bill and the lack of white cheek stripes. Told apart from Erect-crested Penguin by crest beginning toward the top of the bill and splaying out more dramatically. Rockhopper Penguin is smaller.