Testosterone in male songbirds may enhance desire to sing, but not song quality

Introducing testosterone in select areas of a male canary’s brain can affect its ability to successfully attract and mate with a female through birdsong. These findings could shed light on how testosterone acts in the human brain to regulate speech or help explain how anabolic steroids affect human behaviors.

Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/N...