Willow

About
Willow is a blue colored bird that first appeared in Angry Birds Stella, played by Annituuli Kasurinen. She is the 4th bird to be introduced in the game. First introduced in 2014, the character is a main protagonist along with Stella, Poppy, Luca, and Dahlia.

Appearances
Angry birds Lucky Slingshot

Scary Birds

Angry birds Gender Swap!

Bad Birdies

Angry birds Lost Slingshot

Angry birds Food Takeover

Angry birds Stella 2

Happy birds

Five nights at birdies

Slimy birds: Rise of Red Slime

Angry birds TADA!!!!!

Angry birds Gale

Angry birds 3: It's here. (without a hat)

Trivia

 * Aside from being an artist, Willow may also be adept in playing the piano (scrapbook), and scriptwriting (pre-slingshot animation), and can also play the harp, as seen in the Stella Toons episode, Rock On!. This makes her the second bird known to play an instrument, the first being Hal. Her musical talent also includes singing, demonstrated in The Angry Birds Movie.
 * Willow's signature color is the only one not to represent the color of her feathers, but instead the color of her hat, possibly because the color blue is already used for Luca.
 * Just like Hal acts as a boomerang, Willow acts as a vortex.
 * In the episode, The Prankster, Willow seemed to have different colored feathers (or she either have Rainbow Hair) on her head, when trying to dry Poppy's tears. This must have been what was under her hat all along.
 * She has eight hats in total, five of them can be seen from the scrapbook in Angry Birds: Stella Slingshot. The other three, two were owned by herself, and one was made by Dahlia, in her diary.
 * Willow is one of the only characters in Angry Birds Stella with a consistent soundtrack. It can be heard through The Portrait, Premonition, and Free The Hatchlings in Angry Birds POP!. She also has another version of her pop soundtrack here
 * Willow makes a cameo in the Angry Birds Movie. She is currently the second bird in her flock (excluding Stella) to make a confirmed appearance, the first bird is Gale, the third bird is Dahlia, and the fourth bird is Poppy.
 * As British singer Charli XCX voices Willow in the film, she consequently has a British accent while singing the song "Explode".
 * Willow was voted to be the most favorite character out of all of Stella's flock on Twitter.
 * Willow is the second stella bird to be Friends with one of Red's Flock. The first is Luca who is Friends with The Blues.