>>479Female copulatory vocalizations, also called female copulation calls or coital vocalizations are produced by female primates, including human females, and female non-primates. Copulatory vocalizations usually occur during sexual intercourse and are hence related to sexual activity. Vocalizations that occur before intercourse, for the purpose of attracting mates, are known as mating calls.
In primates, copulation calling is typically observed at the end of mating[2] and there are vast variations in between species regarding its occurrence, frequency and form. It is agreed that coital vocalizations fulfill an evolutionary purpose[3] and that they serve as adaptive solutions to problems that the females face, such as infanticide, as well as obtaining high quality sperm.
copulatory calling predominantly occurs before copulation in order to attract mates (mating call).
One of the main purposes of females vocalizing is the induction of mate guarding behavior in males. Conversely, calls may also be used in order to attract high ranking mates who can prevent intercourse with the initial partner.This is done to incite male mate competition.