I hope that's in right place here: I've recently read in Wikipedia that
Pyoro (the roundly bird) is a direct parody of
Kyoro-chan, a mascot for a Morinaga chocolate brand in Japan. Both Pyoro's name and appearance are a parody of this character, which couldn't be more obvious. Watch this opening of the Kyoro-chan anime series, then you'll understand:
http://www.youtube.com/watch?v=FPXi0A6vZlwOMG! I didn't except
that...
Some people here surely already knew this, but according to the Google hits, this fact seems to be quite unknown outside of Japan.