Great for science lesson on evaporation and condensation
Perpetual motion-Watch as the Drinking Birds drinks from a glass
New and Boxed
Great for Science Demonstrations
A 6" bird with a felt covered head and has plastic feet who cannot get his fill of water. You buy the drinks. Fluid inside condenses from the evaporation off the bird's beak, making it top heavy and dunking it back into the water. The condensate rejoins the liquid pool in the bird's bulb, and he tips up again. Process continues indefinitely. WARNING! The fluid and dye inside the bird can permanently stain, and the bird's glass body can easily be broken. Children are fascinated by the bobbing bird, and the educational possibilities are great. But they should watch it, not fondle it!.