Capsaicin is created by plants to try and stop mammals from eating the seeds. Capsaicinoids bind to the TRPV1 receptor in mammals to simulate the body’s response to overheating, resulting in sweating and other cooling attempts. However because birds don’t have the TRPV1 protein they are generally immune from the effects of capsaicin. – https://youtu.be/DbluR1DhTSQ
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