Estrus Bleats tell bucks that a doe is ready to breed. Whitetail, Blacktail, and Mule Deer can all respond quickly and dramatically to the “quivering” doe Estrus Bleat that is produced by “THE Original CAN”. This is the best call you can use to call in bucks during the pre-rut, rut, and post-rut. It is perfect for Whitetail, Blacktail, and Mule Deer.