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In spring, flocks of red birds, blue birds, and yellow birds soar freely through the sky. Spotting a patch of food on the ground, the red birds dive down first, followed closely by the blue birds. The two groups fight over the food, and while they are locked in conflict, the yellow birds seize the opportunity to eat their fill. Suddenly, a giant net descends from above, trapping all the red, blue, and yellow birds inside. Like headless flies, they try many methods but still cannot escape the net. Watching the small birds outside flying freely, they decide to change their strategy. Once they unite, the net falls apart on its own.