Pigeons possess a remarkable sense of direction. There are stories of pigeons that had been bound in bags, blindfolded and carried overseas still finding their ways home. Nikola Tesla, the inventor, became obsessed with them in his late life, perhaps because of this trait. Their beaks contain a small amount of iron. It's believed that this helps them navigate by using the Earth's magnetic poles. This pigeon remained on its perch for nearly forty portraits.
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