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Infrasound and low frequency vocalizations from the giraffe

The giraffe, a savanna ungulate, possessing limited auditory vocalizations, was found to produce infrasound. Recordings were made of 11 Giraffe (Giraffe camelonardalis reticulata), at the North Carolina Zoological Park in Asheboro, North Carolina and the Riverbanks Zoo and Botanical Garden in Columbia, South Carolina. A portable system (7Hz – 22 kHz) was used to record the vocalizations. Analysis was conducted in real-time in the field using a portable trigger oscilloscope and National Instruments Polynesia. Real-time analysis consisted of Hamming FFT’s

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Nocturnal “humming” vocalizations: adding a piece to the puzzle of giraffe vocal communication

Background: Recent research reveals that giraffes (Giraffa camelopardalis sp.) exhibit a socially structured, fission– fusion system. In other species possessing this kind of society, information exchange is important and vocal communication is usually well developed. But is this true for giraffes? Giraffes are known to produce sounds, but there is no evidence that they use vocalizations for communication. Reports on giraffe vocalizations are mainly anecdotal and the missing acoustic descriptions make it difficult to establish a call nomenclature. Despite inconclusive

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