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11 Cards in this Set

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