Ever since the turn of the Millenium, the author of the "Bizzaro" comic has put an upside-down bird with a tophat on in each comic.
First, get about any Bizarro comic. Then, look for 1 of the following items (watch out, they are problably hidden):
1. An eyeball
2. A rabbit face
3. A crown, most likely with some writing below it.
4. A spaceship
5. A slice... more