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11 Cards in this Set
- Front
- Back
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Reptile
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an ectothermic vertebrate that has lungs and scaly skin
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urine
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the watery fluid in which the waste produced by an animals cells is created
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Archeaopteryx
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means ancient winged thing one of the first birds shows relationship between reptiles and birds
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bird
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and endothermic vertabrate that has feathers and a four chambered heart and lays eggs
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contour feather
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one large feather that gives shape to the bird
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down feather
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short fluffy feathers that trap heatand keep the bird warm
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insulator
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amater oil that doesnt conduct heatweel and therefore prevents it from escaping
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crop
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a birds internal storage tank
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gizzard
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thick walled muscular part of stomach
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lift
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the difference in pressure between the upper and lower surfaces of a birds wing
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migration
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the regular, periodic journey of an animal from one place to another
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