What striking vocalization are bull elk famous for producing specifically during the mating season (the rut)?

Answer

High-pitched, whistling bugle

Elk are known for their distinctive, high-pitched, whistling bugle during the rut, a call that differs markedly from the bleats, grunts, and snorts used by deer.

What striking vocalization are bull elk famous for producing specifically during the mating season (the rut)?
taxonomyanimaldeerelk