The Golden Jackal repertoire
by Ovidiu C. Banea
Golden Jackal talks, vocalizations, and even the "letters of the songs" the species plays during the night are now closer to being known by humans.
Briefly, the sound is a vibration that propagates as an acoustic wave through a transmission medium such as a gas, liquid, or solid. Acoustic waves that have frequencies lying between about 20 Hz and 20 kHz, the audio frequency range, elicit an auditory percept in humans. Sound waves above 20 kHz are known as ultrasound and are not audible to humans. Sound waves below 20 Hz are known as infrasound. Different animal species have varying hearing ranges.
Herz is the measure of frequency and 1Hz means 1 cycle/second (time unit).
During the Kerkini Jackal Week meeting, Biologist Uthpala Jayaweera and Professor in Zoology Sampath Seneviratne from the University of Colombo showed the participants sonograms of the Sri Lankan Golden Jackal subspecies - Canis aureus naria (Wroughton, 1916) recorded howls and suggested that the "alphabet" has 23 syllables forming 5 vocalization types.