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What Is Blue Afraid of? - S1-E18
Other mistake: Steve finds the second clue, which is the shadow of an owl. The owl is on a tree branch, but there is no tree shadow that the branch shadow is attached to. A floating tree branch? (00:06:41)
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What Is Blue Afraid of? - S1-E18
Other mistake: Shovel, Pail, and Steve see a shadow, then figure out it's the shadow of a tree. Then, when the red bird comes and lands on the tree branch, the bird's shadow is reversed, with the tail facing the opposite direction. (00:05:58)