Tallbird

A tall, two-legged black monster that has a nest. In its nest, it produces a pale blue egg that you can eat (and cook.)

While they are easy to run away from, Tallbirds deal a fair amount of damage and should not be engaged without proper equipment since they are only minorly stunned by being hit. Tallbirds wander around the vicinity of their nest and will start to aggro if you're too close to their nest and will automatically chase you if take their egg, no matter how far away they are.