Testosterone introduced to specific regions of the male canary's brain affects the frequency and quality of songs, which are used to attract females. Researchers at Johns Hopkins University divided ...

A surge of testosterone could spark a man to burst into song to impress the fairer sex but quality could be everything, research suggests. Tests on canaries suggest that how well they sing after a ...

Young canary males can be tempted to sing songs that do not sound very canarylike, but as breeding season approaches, maturing canary males transform their biologically untested songs into ...