sciencehabit writes The flutelike songs of the male hermit thrush are some of the most beautiful in the animal kingdom. Now, researchers have found that these melodies employ the same mathematical principles that underlie many Western and non-Western musical scales—the first time this has been seen in any animal outside humans. It's doubtful that the similarity is due to the physics of the birds' vocal tract, the team reports. Rather, it seems male hermit thrushes choose to sing notes from these harmonic series. It may be that such notes are easier for the males to remember, or provide a ready yardstick for their chief critics—female hermit thrushes. The study adds to other research indicating that human music is not solely governed by cultural practices, but is also at least partially determined by biology.
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