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10 Cards in this Set
- Front
- Back
What type of feathers are soft, fluffy, cover body of nesting birds for insulation?
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Down
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What enables birds to migrate to the same places year after year?
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stars and sun position, topographical landmarks, magnetic cues, air pressure and low frequency sounds
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What is the place where gastric fluids begin breaking down food called?
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Proventriculus
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What type of young have eggs incubated for long periods of time and are active when hatched?
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Precocial
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What type of feathers are specialized on the wings or tail?
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Flight
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What is the muscular organ that kneads and crushes food?
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Gizzard
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What type of young have eggs that hatch quickly-blind, naked, and helpless?
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Altricial
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What type of feathers give adult birds streamlined shape and provide color and insulation?
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Contour
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What is the enlargement of the esophagus that stores and moistens food?
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Crop
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What type of feathers are dust-filtering bristles near nostrils?
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Pin
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