- "You know what my days used to be like? I just tested. Nobody murdered me. Or put me in a potato. Or fed me to birds. I had a pretty good life."
The bird is a minor character and antagonist in Portal 2.
The bird attacks Wheatley after he uses her eggs to break a door. Later, the bird kidnapped GLaDOS while she was a potato. After this, GLaDOS developed an incredibly large fear of birds, telling Chell to kill them.
At the end of the DLC Peer Review co-op stage, the bird is chased and locked out of Aperture Science by ATLAS and P-body despite GLaDOS' frantic order to abort the mission and retreat. The bird's eggs are hatched by GLaDOS after this, one of which is nicknamed "Mr. Chubby Beak" by GLaDOS, with GLaDOS planning to raise them into little killing machines.
- Judging from the bird's appearance and noises, she might be a corvid, most likely an American crow.