how do male birds know when to wake up and sing in the morning?

Subject: how do male birds know when to wake up and sing in the morning?

Date: Sat Jan 20 15:53:47 2001
Posted by Kelly Belgrave
Grade level: undergrad School: university of western ontario
City: London State/Province: ON Country: canada
Area of science: Zoology
ID: 980024027.Zo

Message:


Before sunrise?

Re: how do male birds know when to wake up and sing in the morning?

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