Tallbird

Tallbirds are tall, two-legged black Birds/Monsters that live near their Tallbird Nest. In its nest, it produces a pale speckled blue or green Tallbird Egg that the player can either eat (cook or use in the Crock Pot) or hatch it into a Smallbird by placing it near a campfire.

Tallbirds deal a fair amount of damage for each hit they do. If you steal an egg, make sure you do not kill the parent as they will re-lay an egg to replace the one you've stolen. If you kill the parent, avoid stealing the egg as they will hatch and replace them.

They will also attack the player if they come too close to them. The Tallbird is not put to sleep by the blow dart weapon.

Tallbirds take 3-4 days to respawn.

Night
At night the Tallbird will go over and curl up onto its nest. Sometimes they will also do this during the day. You can push them off the nest and steal the egg. They do wake up and give chase. Although they seem less keen on a chase through the darkness.

Trivia
In the Alpha, they were easy to run away from, but as of Beta update, their running-speed has been increased.