Deer produce a range of sounds, such as snorts, bleats, baas, grunts, and clicking noises. Bucks, does, and fawns employ distinct vocalisations for distinct sorts of communication.
All deer emit a warning snort like a whine when they feel disturbed or sense danger. This alerts other deer to a potential threat. When cornered or severely agitated, deer emit a loud “baa” sound that causes does to flee in fear. Bucks grunt loudly to assert their superiority when challenged by other bucks. When pursuing does during the mating season, they alternate between a mild, similar grunt and a clicking sound. When grazing in a herd, does communicate with a lengthy, ascending and descending “err-err-err” sound. To call their moms, fawns emit a mew-like bleat. When a fawn is distressed or hungry, its mew is louder and higher.