Screeching bird

The screeching dodo can be found in the swamp where the Foggy Swamp Tribe is located. It is a white bird that screams ominously, therefore scaring visitors away from the Foggy Swamp.

History
The screeching dodo is first seen when Katara, Sokka, and Aang were walking through the mysterious swamp. Sokka tried to convince the group that it's just a normal swamp, but when they heard the scream of the screeching dodo, the group became scared, and they huddle together to quell each others' fear. Later, near the episode's end, another screeching dodo was seen, and after it screamed its awful scream, a vine whacked it away, creating an aura of mystery.

Anatomy
The screeching dodo has mottled gray and whitish feathers that appear to be puffed up all around its body. The white feathers are on the tips of its wings and cheeks. Its eyes and beak are almost hidden by its pudgy face; the eyes especially appear beady and dark beneath its head feathers. Its beak is very tiny when closed; when open, it can spread very wide to emit a loud shriek that sounds like a woman screaming. Its anatomy does not appear to have a connection to the real-life dodo bird. It, technically, is not a hybridized animal.

Connection
The bird does not really have any real world connections beyond its appearance as a bird, although its terrifying shriek may have been inspired by the call of the real-life spot-bellied eagle-owl or perhaps the similarly-named screech owl. The screeching dodo does not share much resemblance with actual, now extinct, dodos.