Singing possibly allows these mice to avoid injury and conserve energy, as aggressive physical encounters in the wild can be quite costly. What’s particularly striking is that these singing ...
Juvenile male zebra finches normally learn to sing by memorizing the song of an older male, and then using auditory feedback to gradually match their own vocalizations to this 'internal model'.
There is already a project to release captive-bred regent honeyeaters into the wild every few years, to boost the population. "But if those male birds are singing a weird song, the females might ...