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Chapter 4 Vocab
Chapter 4 Vocab Part 1
Word | Definition |
---|---|
birds | An ectothermic vertebrate that lays eggs and has feathers and a four-chambered heart. |
contour feathers | A large feather that helps give shape to a bird's body. |
down feathers | A short, fluffy feather that traps heat and keeps a bird warm. |
crop | An internal organ of many birds that stores food. |
gizzard | A muscular, thick-walled part of a bird's stomach that squeezes and grinds partially digested food. |