10ml Vintage Retro Magical Drinker, Amazing Bird Drinks, Bird Drinks, Water Green Science Kits<br> Features:<br> The internal liquid is condensed by the evaporative of the water in the beak, making it heavier and putting it back into the water. Condensate is added back to the liquid pool in the bird ball and then bent downward<br> A silly looking bird with on its and plastic on its feet. What's worse, you can't up with water. Buy drinks.<br> Charming: this retro toy is a great scientific. It's very interesting to see a perpetual motion machine. Getting wet on her is her favorite thing to do all day! Looking for our upcoming manual boiler<br> Ideal evaporation and condensation science. Eternal sports bring eternal. Great conversation<br> the water outside the beak evaporates and cools, the internal liquid condenses, making it heavy and falling back into the water. The condensate is added to the liquid pool again at the focus of the bird, and then returns again. The process continues indefinitely.<br> :<br> size：1.96” 2.16” 7.28”