This Thread is made mostly for researching stuff and asking questions so we don't need hundreds of threads. I've studied the bird lately and it's movement is mostly circular, if it touches a wall it will mostly just turn around 180 degrees. Birds are attracted to each other and will form flocks that just fly in straight lines till they hit a wall. When birds are spawned they will mostly instantly fly up. They will dodge anything that harms them, like lava, but they're not so good at it.