Never mind that Kellogg’s was partly motivated by fear of losing ground to General Mills’ Cocoa Puffs, whose mascot is Sonny, the cuckoo bird who is “cuckoo for Cocoa Puffs.” It’s one ...

Unlike Cheerios, however, Cocoa Puffs are marketed directly at children. The cereal's mascot is Sonny the Cuckoo Bird, and has long been advertised during children's programming.