One or more sound producers disrupt auditory communications among animals in a defined locale. The sound is defined by (i) a frequency range commensurate with a communication frequency range used by at least one species to carry out auditory communications, (ii) colored noise in the frequency range, and (iii) a sound level of the colored noise in the frequency range at a perimeter region of the defined locale not to exceed approximately a peak sound level associated with auditory communications of one or more species.