Trying to find toy from 40's or 50's for dad but don't know name

[cilantromapuche]

It is a bird (made out of glass or something like that) that rocks back and forth drinking from water. as long as it has water it works. has anyone seen one or at least know what it is called?

http://www.fakecrap.com/products/drinking_bird.html
Try a search using the phrase perpetual motion, along with drinking bird, and you'll turn up a few more sites...

[cilantromapuche]

THANK YOU!! THANK YOU!! these boards are truly amazing. I knew someone would have the answer!