Principe Starling

Large seabird, very similar to Masked Booby. Long and pointy on all ends: wings, tail, and bill. Adults mostly gleaming white with black flight feathers and face; note pinkish-orange (not yellow) bill to help separate from adult Masked. Young birds darker overall with brown head contrasting with white belly and dirty brown markings on underwings; very similar to young Masked or even adult Brown Booby. Found in the Pacific Ocean from Mexico to Peru where it feeds on fish; breeds on rocky islands, especially the Galapagos.

A lithe, medium-sized bustard with black daubs on a mostly tan-colored back. The male has a black belly, neck stripe, throat, and face patch. The female is uniform buff-brown from the belly to the head. In flight, both sexes have white windows in the wings. Singles and pairs inhabit tall grassland and grassy savanna. Its strange display involves the male stretching his neck and making a frog-like “kwoork” croak, and as he retracts his head to the shoulders, follows with a “grrrr” growl and champagne-cork-like “pop” while his head lifts again. He also performs an aerial display with the wings held back rigidly and with a puffed throat exposed.

Large turkeylike bird found in extensive areas of sagebrush. Both sexes gray overall with very fine patterning, black belly, and long pointed tail. Males have a white breast and a black throat. Spectacular male display involves fanning tail, inflating yellow air sacs on chest, and thrusting them forward to produce liquidy popping noises. Extremely similar to more widespread Greater Sage-Grouse but smaller and no range overlap. Also note lighter tail and longer head plumes on Gunnison when displaying. Most easily seen at display sites in early spring; can be very inconspicuous at other times of year. Tends to forage in wet riparian areas near sagebrush. Population in decline.