As you already have a penguin n a chicken, I know bout a bird which lived a thousand years ago and is extinct.it is called a dodo bird.this bird was eaten by the inhabitanats of the place where they lived and so it became extinct.it could not fly.
there was no very special reason for me to join this site but as sometimes i need some help in debates essays i sometimes find it very useful......n another thing is that i like to anwer questions cuz it helps to present my views....n it also helps the other person in some ways