The Original Drinking Bird has been a scientific novelty favorite for decades. Our little bird bobs his red beak into a glass of water again and again. When the funny bird is in motion, he appears to be in a perpetual motion machine, but it is actually an example of evaporation heat engine in our physics lesson
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Drinking Lucky Bird
Original price was: $9.99.$7.99Current price is: $7.99.
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Drinking Lucky Bird
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