Male Mice have "Singing Voices"

Think twice the next time you call someone as quiet as a mouse—the rodents are actually sophisticated singers, a new study says.
For the first time, scientists caught wild male house mice and used digital audio software to examine the durations, pitches, and frequencies of their sounds.
The results revealed that the males’ songs are more complex than mere squeaks, and that each male has a different singing “voice.”
Scientists already knew that these melodious males sing when they smell a female, and that females are in turn attracted to their tunes. But the new research suggests it may be more complicated than that.
The research also showed that brothers’ sounds are similar to each other when compared with songs of unrelated males—possibly a strategy for females to discern males and avoid inbreeding, according to the study, published recently in the journals Physiology & Behavior and the Journal of Ethology.

Source:National Geographic