The development of behavior - Pulling it all together - the development of bird song - Genetic, hormonal, and neural control of song

4 important questions on The development of behavior - Pulling it all together - the development of bird song - Genetic, hormonal, and neural control of song

Why do birds sing?

To attract females and to advertise the boundaries of their territories.

What are the main areas in the brain involved in song?

The posterior pathway (involved in the production of song) and the anterior pathway (involved in the acquisition of song). Other areas of the brain function in the perception (hearing) of a song and in the storage of memories of song heard when young.

Which hormone has a major role in sexual differentation of the song system?

Estrogen, the higher levels of estrogen in male brain tissue masculinize the song system.
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What effects do hormones have on the song system?

Both organizational (estrogen; early in life) and activational (testosterone; adulthood) effects.

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