Birds

__Bird Information__
Characterisitics Feathers, Wings, Beak Thin, hollow bones Large Sternum Very efficient lung and air sacs Undirectional air flow 4-chambered heart Endotherms (warm-blooded) Keen eyesight- 8-10x better than humans Internal Fertilization External development in amniotic egg Hatchlings- -Atricial- young hatch without feathers and are dependent on adults (ex. Red-Tailed Hawk) -Precocial- Young hatch fully feathered and follow mother (ex. Turkey) Large variety of diets -Seeds, Nectar, Insects, Small Animals, Carrion -Beaks indicate diet Types- -Flight- for flying -Contour- covers bird body -Down- used for insulation -Feathers Extremely light (may have evolved from scales) -No teeth -Hollow Bones -Sternaum allows for attachment of powerful flight muscles -Flight requires energy and efficiency Heartbeat pumps blood carrying oxygen to the muscles at 1000 beats per minute Airflow system is undirectional, making it more efficient -Kingdom -Phylum -Subphylum -Class
 * Body Structure
 * Body Function
 * Reproduction
 * Digestion
 * Feathers
 * Flight Adaptations
 * Bird Taxonomy

Bird Pictures
Cite: [] This steller's sea eagle is flying while hunting on a penninsula off of Japan. Cite: [] This pelican is catching a fish that was thrown from a boat in Nambia. Cite: [] This is a picture of Kiwi, a common tern chick, who is waiting to be fed along with his sister. Cite: [] Snow geese are flocking during sunrise in New Mexico. Cite: [] This is an athene noctua, sitting on a rock in Spain around dusk.

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