A very good site about the circulatory system of a bird. It is reader friendly, and includes a fair amount of information. Good diagram of the circulatory system.

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Concepts

birds

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Additional Tags

bird heart, circulatory system, a bird's heart and blood, avian circulation, avian circulatory system, avian heart, bird circulation, bird circulatory system

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Classroom Considerations

Knovation Readability Score: 5 (1 low difficulty, 5 high difficulty)

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