How do roosters know when to crow when it’s dark?

Subject: How do roosters know when to crow when it’s dark?

Date: Fri Feb 4 14:50:35 2000
Posted by Elizabeth Kater
Grade level: 7-9 School: Delta Cyber School
City: Fairbanks State/Province: Alaska Country: USA
Area of science: Zoology
ID: 949697435.Zo

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Re: How do roosters know when to crow when it’s dark?

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