Perhaps ... though poor Rei-chan will have to live with being called a parrot for now (Maybe that's why the bird is upset all the time ?
)
Speaking of which, I wonder if animals would be susceptible to memory manipulation as well ? Assuming they are indeed untouched by the phenomenon, I guess that could explain why it keeps "mourning" Rei-chan, despite Reiko seemingly being right there all the time. And then we have her comment how she can't stand the bird ... of course it could be her being annoyed at the noise it keeps making, but I doubt it's something as simple as that, especially with the other suspicious clues pointing in her direction.