7th Grade Abeka Science Quiz 20

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10 Terms

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Alula

A retractable group of feathers on the front of the wing

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Pectoral

Most important flight muscles

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Keratin

Toothless bulls are made of

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Binocular

Eyesight that hunting birds have allowing them to focus both of their eyes on one object

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Gizzard

Grinds food

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Down

Soft,fluffy feathers

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Two

Each breath moves through the respiratory system to where a bird must inhale/exhale how many times

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Crop

Sac in the esophagus that moistens food

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Air capillaries

Tiny tubes that allow air to flow through a bird's lungs

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Preen gland

Birds waterproof their feathers with oil in the