ORDER 4. TOTIPALMATE SWIMMERS.—Steganopodes.
All four toes joined by webs.
TROPIC BIRDS. Family Phaethontidæ:—Bill and form tern-like; middle tail feathers very long.
GANNETS. Family Sulidæ:—Bill heavy and pointed; face and small throat pouch, bare.
SKAKE-BIRDS. Family Anhingidæ:—Bill slender and pointed; neck and tail very long, the latter rounded; habits like those of the following.
CORMORANTS. Family Phalacrocoracidæ:—Bill slender, but hooked at the tip; plumage glossy black and brown; eyes green. They use their wings as well as feet when pursuing fish under water.
PELICANS. Family Pelecanidæ:—Bill very long and with a large pouch suspended below.
MAN-O’-WAR BIRDS. Family Fregatidæ:—very long and strongly hooked; tail long and forked; wholly maritime, as are all but the preceding three.