There are 3 cages, labeled PARROTS, HENS, PARROTS & HENS. But all the boxes are named wrongly.
How will you correct the box names by picking only one bird from one of the box?
Pick from the one labeled "Parrots and Hens". This box must contain only "Parrots".
Pick from the one labeled "Parrots and Hens". This box must contain either only parrots or only hens.
If you find a parrot, label the box parrots, then change the parrot box to hens, and the hens box to "Parrots & Hens."
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