“A Study Of Captive Brown-Nosed Coatis, Nasua Nasua: An Ethogram And Contact Call Analysis”, 1995-05-01 (; similar):
This study investigated the behavior and communication of captive brown-nosed coatis, Nasua nasua.
An ethogram was obtained by observing and recording the behaviors of a group of five animals at the Denver Zoological Gardens in Denver, Colorado. Contact calls were recorded and analyzed using sound spectrographs. All vocalizations heard were paired with the behavioral context in which they were emitted to reveal the potential function of the call.
Ethogram results indicated behaviors that are similar to those found in wild coatis. Vocalization analysis indicated that the coati contact calls contain signature frequencies. These individual contact calls would be beneficial to this social species in maintaining contact with relatives. The coatis also emitted ultrasonic frequencies in their contact calls.
Individual acoustic frequencies and ultrasound use would be beneficial for this social species in maintaining contact in dense vegetation while minimizing detection by predators.