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Unformatted text preview: because they need a high metabolic rate); no mixture of systemic and pulmonary systems; -Systemic-Pulmonary 5. Metabolic rate have a very fast metabolic rate, eat a lot of seeds (high in calories)-Homoeothermic means warm-blooded (we can regulate or body temperature to keep it fairly constant 6. Excretion uric acid; no urinary bladder, they also have other modifications t make them light (such as having only one ovary) 7. Digestive system have a crop (soft and muscular, for storing food) and gizzard (very muscular, for grinding food; often they eat gravel to help grinding) 8. Reproduction internal fertilization, have a cloaca but no weenie, the tubes where the sperm come out of very close to the cloaca (female also has cloaca); have hard shells; mothers have to incubate the eggs because they are warm-blooded (in warm-blooded egg layers the eggs must be incubated) 9. Scales on legs; remnants of reptilian ancestors...
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This note was uploaded on 05/30/2008 for the course BS 131 taught by Professor Smith during the Spring '08 term at University of the Sciences in Philadelphia.
- Spring '08