The Red Bird is the default bird of the series and is used in every game. The only power is saying caw caw.
In Angry Birds Star, the Red Bird is upgraded since the HP of enemies increase. The birds only power is saying caw caw
In all games of Angry Birds: Experiments the Red Bird had the same power except that the bird is wearing a hat with three lines. Two of them were crived and one of them were straight. The hat is the same hat as one of the episodes of Elmo's World.
Red Bird appears in Angry Annoying Orange. He is the first Bird (AO cast does not count) that is ever in the slingshot.