Anous minutus Boie, F, 1844

Black noddies are medium-sized terns with uniformly dark, sooty plumage and a white cap, the reverse of the common tern color pattern. The white cap blends gradually into the grey of the body. They measure 35 to 40 cm in length, 65 to 72 cm in wingspan, and weigh from 85 to 140 grams. They have small, white markings on the lower and upper rims of their eyelids. The bill is black and the legs and feet are reddish-brown to orange. The mouth lining and tongue is orange-yellow in the northwestern Hawaiian Islands and Atlantic populations, yellow in Caribbean Islands, and the mouth lining is pink and the tongue yellow in Australia. The tail is 105 to 130 mm and is wedge-shaped with a central notch. Males and females are similar, juveniles are also similar, but are slightly more pale in color and the white cap is sharply differentiated from the gray body plumage