The vocal repertoire of this species consists mainly of monosyllabic calls. This description is not complete, however; the vocal components of mother-pup interactions and male courtship have not been documented so far. Distress calls are uttered whenever a bat is attacked by conspecifics or restrained by the observer. The distress call is the only multisyllabic vocalization type in the vocal repertoire of G. soricina. It consists of three different syllables (S1-S3), of which S1 is always the first syllable; the others (S2-S3) are combined variably within the call. Trills are produced during aggressive encounters and uttered repeatedly in long bouts.  Approach pulses are observed when a bat approaches the roost, shortly before landing. Bats in the roost probably produce the approach pulses. Males produce contact calls during tandem flights with females and we never recorded this vocalization type in another context.  Bats produce alert calls when disturbed or when several individuals are circling around the same location (i.e., roost or nectar source). Another social call is uttered during tandem-flights and chases but it is not known which of the involved bats utters the respective vocalization type and whether it is used in an aggressive or affiliative context.  Gs inverted V.wav Gs mod sweep.wav Gs QCF call.wav Gs zigzag.wav Gs flat mod sweep.wav Gs hooks.wav For the remaining vocalization types, the distinct social context in which they occurr is unknown. Knörnschild M, Glöckner V, von Helversen O. 2010. Acta Chiropterologica 12: 205-215. The wav files for download are shifted down in frequency and have a reduced sampling rate (100 kHz). |
