Fig. 9

Syllable type usage depending on the latency to the first litter (LFL). NMDS plots showing syllable type usage during (a) introduction and (b) interaction phase comparing pairs with a short latency to the first litter (LFL < 25d, green circles) and pairs with a long latency to the first litter (LFL > 25d, orange triangles). Letters in black indicate the syllable types; each symbol represents one breeding pair. Distances between the symbols represent similarities of breeding pairs in the number of emitted syllable types. Short distances of symbols to letters indicate syllable types which were most representative for each breeding pair