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UMAP projections of birdsong syllables for several zebra finches Song of bird A .. 0 ... Cluster Song (all utterances of a of bird B particular syllable - Syllable by one bird) Song A, long path length between five syllables Song B, short path length Syllables might be sung in a different order onature Fiqure 1l Analysing birdsong properties, Alam et al.' present a holistic approach to assess birdsong features in male zebra finches (Taeniopygia guttata). Each bird has a single song, which is composed of a varied number of repeats with a core sequence of between two to seven sounds (syllables). The authors used a computational technique called UMAP to plot individual syllables onto a 2D map and found the shortest path between the syllables of a bird's song (the order in which syllables are sung might differ from this). They generated five-syllable songs and temales preferred those songs in which the syllables were separated by a longer path length over those with a shorter path length. Songs with a longer path length might be higher-quality songs, although which aspect of the song's qualities the females prefer is not fully understood.

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