- Script
- Pierre Culliford [as Peyo]; Gos
- Pencils
- Pierre Culliford [as Peyo]; Gos
- Inks
- Pierre Culliford [as Peyo]; Gos
- Colors
- Nine Culliford
- Letters
- ?
- Genre
- fantasy-supernatural
- Characters
- Smurfs; Gargamel; Azrael; Howlibird
- Synopsis
- Two Smurfs failed to properly dispose of a failed potion brewed by Papa Smurf. A small bird swallows some of the potion and turns into a huge destructive bird that is a menace to both the Smurfs and their houses.
- Reprints
Name and design of the Howlibird by André Franquin