Class Notes - The Orders of Birds Traditional Definition of...

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1 The Orders of Birds Traditional Definition of Orders Superorder Paleognathae (Ratites and Tinamous): share a unique configuration of the bones between the nasal passages (the paleognathous palate) Tinamiformes. Tinamous (1 family, 47 species). Neotropical. Can fly, but have reduced sternal keel. Rheiformes. Rheas (1 family, 2 species). Neotropical. Flightless, keel-less sternum. Struthioniformes Ostrich (1family, 1 species). Africa. Flightless, keel-less sternum. Casuariiformes Flightless, keel-less sternum. Two families: Dromiceidae. Emu (1 species) Australia. Casuariidae. Cassuaries (3 species) Australia and New Guinea. Dinornithiformes. 1 extant family, Apterygidae. Kiwis (3 species) New Zealand. Superorder Neognathae Podicipediformes. Grebes (1 family, 21 species). Worldwide. Foot-propelled divers, with toes lobed and tarsi laterally compressed. Feet set far back on body, making movement on land awkward. Young subprecocial, carried on back by parents. In most species, the nest is a floating platform of vegetation. Sphenisciformes. Penguins (1 family, 17 species). Southern oceans. Flightless, wings adapted as flippers for swimming, cannot be folded. Sternal keel well-developed. Young are semiprecocial. Procellariiformes. Tube-nosed seabirds, including albatrosses, shearwaters, and petrels (4 families, 115 species). Tubuluar nostrils, hooked bill. Salt gland in roof of orbit. Lay only one egg and have long incubation and nestking periods. Young semialtricial. Pelecanifomes. Pelicans, cormorants, and relatives (6 families, 67 species). Feet totipalmate, toes joined by webs. Most have distensible pouch of bare skin between the halves of the lower mandible.
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2 Anseriformes. Waterfowl, including ducks, geese, and swans (2 families, 161 species). Young precocial. Screamers (Anhimidae; 3 species) have little webbing on feet and hooked bills. Anatidae have webbed feet and flattened, blunt-tipped bill. Phoenicopteriformes. Flamingos (5 species). Tropics, except Australia. Long legs,
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This note was uploaded on 02/17/2011 for the course BIOL 630 taught by Professor Hughes during the Spring '11 term at South Carolina.

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Class Notes - The Orders of Birds Traditional Definition of...

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