Terence

The Big Brother Bird (also known as the Giant Red Bird, Bordeaux Bird, Caveman Bird, Fat Red Bird, Juggernaut Bird, A380 Bird, Fat Bird, Big Red Bird, Power Bird, Terrence, Big Nuke Brother or Big Cardinal Bird) is one of the several birds in Angry Birds. It's described as the larger counterpart to the Red Bird, having much more strength. If is tapped or clicked while moving, it will result in a big whine. However it's more powerful than his little brother, the Red Bird.

Big Brother Birds are first introduced in the episode The Big Setup and are used for the majority of the episode, starting from Theme 9-1. It is the only bird that can easily smash through about one block of concrete, and it doesn't need a special ability to smash through all types of obstacles. Instead, it uses its weight to crush through objects. However, his strength varies depending on what block(s) he's used on, as a large square block will almost always stop the Big Brother Bird in its tracks.

The Big Brother Bird is the 2nd biggest bird of all, but the biggest character is the Mighty Eagle.

Trivia
The mighty eagle was most likely feared by the birds, while the Big Brother Bird is most likely feared by the pigs
 * Like the Red Bird, Big Brother Bird will make a noise when you tap the screen or clicking the mouse.
 * The Big Brother Bird, Black Bird, and the Globe Bird are the only birds without a Corpse Sprite.
 * Red Bird and Big Brother Bird are the only related birds.
 * Just a few days ago in the Christmas Comic, it was revealed that his name was Terrence, when Red Bird had a conversation with him about preparing for Christmas. Therefore, making him the only bird who has a name.
 * The Big Brother Bird only appers in the Christmas Comic.
 * In the Angry Birds Christmas Comic " A Pigs Christmas". Big Brother is reffered to as " Terence ".