Plumm

From Zelda Wiki.org

Plumm is a myna bird which appears Twilight Princess whenever Link approaches a patch of Hawk Weed at Lake Hylia. If Link speaks to him while in Hylian form, he will say "Plumm has no need to speak to humans...". However, in the form of wolf, his response will be to ask Link to play a mini-game.

Plumm may well belong to Iza, since both Iza's brother and sister own a bird, and since he can be found at the finish point of Iza's Rapid Ride. Unlike the other myna bird in Twilight Princess, he is somewhat rude, telling Link what a lame job after losing the mini-game. He is amazed when Link wins, and when he gives Link the prize for winning, he clearly states that he is not giving it to him because he likes him.