USV repertoires of different <i>Mus</i> populations based on the first 100 syllables.

<p>N = 10, except for Hybrid 1 = 5, Hybrid 2 = 7 and <i>M</i>.<i>m</i>.<i>d</i>. = 4. Syllable type ‘Frequency Upsweep’ is the most common type with a proportion of on average 56.6% (± 21.35 SD) of the repertoire. Syllable types ‘U-shaped’, ‘U-shaped Inverted’ and ‘2-Frequency Step’ were not emitted by all populations.