Ruby

Ruby is a bird that is first seen in Angry Birds Seasons. She resembles her male counterpart Red, but has eyelashes, different pupils, thinner eyebrows, lighter spots, and wears a yellow bow on the top of her head (though it is blue in the free version).

Unlike the other birds, Ruby isn't an actual species that is used in the game, rather it only serves as a background character used in various materials to promote the game, and is also seen in the ending sequence upon completing Hogs and Kisses, alongside a solo Red. A plush toy version of her was released along with a plush toy version of the Female White Bird.