Birds

[] Video on Hummingbird's

Hummingbird

Ostrich - Largest bird

Robin

Albatross

__ Bird Information __

- Body Structure; · Feathers, wings, beak · Thin, hollow bones · Large sternum

- Body Function; · Very efficient lungs and air sacs o Unidirectional air flow · Four-chambered heart · Endotherms · Keen eyesight – 8-10x better than humans

- Reproduction · Internal fertilization · External development in amniotic egg · Hatchlings; o Altricial-young hatch without feathers and are dependent on adults o Precocial- young hatch fully feathered and follow mother - Digestion · Large variety of diets · Seeds, nectar, insects, small animals, carrion · Beaks indicate diet - Feathers · Types; Flight- for flying Contour- covers bird body Down- used for insulation · Males are usually more brightly colored - Flight Adaptations · Feathers; extremely light (may have evolved from scales) · No teeth · Hollow bones · Sternum allows for attachment of powerful flight muscles · Flight requires energy and efficiency o Heartbeat pumps blood carrying oxygen to the muscles at 1,000 beats/minutes o Air flow system is unidirectional, making it more efficient - Taxonomy · Kingdom: Animalia · Phylum: Chordata · Subphylum: Vertebrata · Class: Aves

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