New Delhi, Aug. 18 -- Optical illusions often trick our brains and eyes. This new viral image is also an illusion like this. In the picture, you can see a lush tree with green leaves and branches, but the challenge is that in this natural camouflage, a parrot is hidden, which looks almost invisible to the naked eye.

Your task is simple. In just 15 seconds, you have to find the hidden parrot. Only one per cent of people in the world can solve this quickly. The image was first shared on Reddit.

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Scientists and researchers around the world often use optical illusions to study how the human brain works. These puzzles test how...