Chapter 8: Birds Flashcards
(129 cards)
The feathers of birds are called.
Plumage.
Birds are the class?
Aves.
Scientist who study birds.
Ornithologists.
Characteristics of birds.
Bipedal, warm blooded, vertebrates, feathers, scaly legs, wings.
Term pertaining to birds.
Avian.
Instead of solid bones what do birds have.
Hollow bones strengthened by internal cross bracing like a steel girder.
The largest flying bird.
Andean condor.
Instead of teeth and jawbones what do birds have.
Toothless bills made of keratin, reinforced by lightweight bony struts.
Large ridge on the sternum.
Keel.
Clavicles of a bird that are fused together forming the ?
Furcula
Short upper arm bone of a bird.
Humerus.
Lower, longer arm bones of a bird.
Ulna and radius.
Retractable group of feathers.
Alula.
The ? Of a flying birds are engineered to meet the power demands of flight.
Muscles.
The most important flight muscles.
Pectorals.
The larger two of the four pectoral muscles that pulls the wing down to produce the power stroke.
Pectoralis major.
Pulls the wing up like a rope and pulley
Pectoralis minor.
By using these muscles instead of back muscles.
The birds weight is concentrated low in their chest for stability in flight.
Birds do not have a diaphragm but instead.
Air is pumped through the lungs as chest muscles expand and contract the thoracic cavity.
A bird inhales and exhales twice to move each breath of air
Ffdfh
True or false: a birds four chambered heart circulates blood in a pattern similar to mammals and humans.
True.
True or false: store a lot of liquid and solid waste in their bodies.
False.
A storage sac in the esophagus if a bird.
Crop.
Special section in the stomach of a bird that grinds the food.
Gizzard.