|My campfire last month|
It could mean food, but I have never heard of a Bigfoot coming into someones camp raiding it for food. I have heard of them coming into a camp at night after everyone has turned. Maybe researchers should fake going to bed then be on the lookout for something scavenging the camp. Having a camera trained at the fire may be the ticket.
I am only guessing for I have tired the bonfire but am unsure if it has done anything. It has allowed me to cook meat and vegetables over the fire. That is always a good thing. Bigfoot hunting can work up a good appetite.