Alarm signal generated
by black fire ants when a microphone probe is inserted into their mound.
Normal movement sounds of a group of ants with occasional bursts of stridulation sound from a single ant.
Sounds of ants attacking a caterpillar with stridulation sound from a single ant.
Distress signals emitted by a single major worker with a caught antenna.
Reference: R. Hickling and R. L. Brown, "Analysis of acoustic communication by ants" Journ. Acoust. Soc. Amer.,Vol. 108, No. 4, pp 1920-1929, 2000.
Hickling Bio (web page or pdf document)