Shoebills Sound Like Machine Guns

This prehistoric bird looks like it wants to murder you in your sleep. That's probably why its gaze is affectionately nicknamed the "death stare.

Known as a shoebill, this bizarre bird found meme fame because of its bone-chilling stare. Even Joe Rogan gave the shoebill a social media shoutout. But this bird has other captivating attributes. How big do they get? Why do they make such jarring machine-gun sounds? And if a shoebill gives you the death stare, should you be scared?