I recall seeing a documentary once about refugees fleeing Zimbabwe for South Africa. They would have to cross hundreds of miles of country and national park.
The people making the trek mistakenly believed that banging pots would scare away lions.
the lions instead quickly learned that the clanging sound meant their home-delivery pizza had arrived.
Large predators are only intimidated by humans when armed humans kill predators on sight, and the lesson has had a chance to propagate through the species.
In the US, wolves, bears, and mountain lions used to avoid humans because only the ones who avoided humans passed on their genes. Now after a few decades of unarmed humans being the norm in their environments, they are discovering that humans are soft and tasty.
Ditto with the quail (some pics on my page) around here. Since we supply birdseed, every time we open the back sliding door they come running in from the desert; when we open the metal food container, the squeaking noise drives 'em into a hungry frenzy.