Roger sees Circling Birdies after getting hit by a refrigerator while making a cartoon, but the director gets mad at him for not following the script: "It says 'Rabbit gets clonked, rabbit sees stars'. Not birds, stars!" Roger proceeds to repeatedly bash himself in the head, resulting in a whole series of revolving visions of everything but stars.
Later in the film, after Eddie goes to Toontown, he bumps his head getting out of his car and sees birdies (hatching from eggs and flying around his head), and shoos them away in disgust, giving one of them its own circle of something in the process.
In the The Adventures of Tintin, when the pickpocket is confronted outside his home by the police he tries to run away but we hear a crash off screen. Camera moves over to show him on the ground with little birds circling his head. The birds are in fact real and he had run into a woman who had just bought the birds at the pet store. The store owner can be seen catching the birds in a net.
In one of the credits gags in Brother Bear, Koda uses one of his fighting moves on one of the moose, and we hear the bird chirping sound when he hits the ground.