Who plays Gertrude mcfuzz in Horton Hears a Who?

In the 2008 animated film "Horton Hears a Who!", the character Gertrude McFuzz is voiced by actress and singer Amy Poehler. Gertrude is a bird who has a crush on Horton and plays a significant role in the story, showcasing themes of love and friendship. Poehler's voice performance adds charm and humor to the character.