Much like how hunters make calls to ellicit vocal responses from animals, Bigfoot hunters make calls into the forest to elicit a response from Bigfoot. Although it's a fun and easy method of generating interaction and confirming the Bigfoot was in the area, no one really knows whether our calls are friendly or aggressive. Are we challenging them to a fight? Or are we telling them that we're invading their territory? Nobody knows for sure what it means, but that's not going to stop the professionals from calling out the wood apes.
Watch and learn how the pros make their calls: