An adult male sparrow sings its normal song ____.
A)if he hears the song during a sensitive period early in his life
B)only when he hears a female bird singing
C)if his own species' song is the first song he hears when young
D)regardless of whether or not he has ever heard his species' song from another bird

Question

​An adult male sparrow sings its normal song ____.
A)if he hears the song during a sensitive period early in his life
B)only when he hears a female bird singing​
C)if his own species' song is the first song he hears when young​
D)regardless of whether or not he has ever heard his species' song from another bird​

Quizplus · Accepted Answer

An adult male sparrow learns to sing its normal song if it hears the song during a sensitive period early in its life. This is a critical period for song learning in many bird species.

​An Adult Male Sparrow Sings Its Normal Song ____

An Adult Male Sparrow Sings Its Normal Song ____