If you're not quite sure what the Drinking Bird is then now might be the time you wish you had paid attention in those science lessons. For any Simpsons fans out there the Drinking Bird appeared in the episode where Homer got the Drinking Bird to do his job for him and press the Y key (for yes) on the keyboard venting the gas for the Nuclear power plant.

To operate the Drinking Bird, just get its head wet. As the water evaporates, fluid moves up into the head, causing the bird to become top-heavy and dip forward. Once the bird dips forward, fluid moves back into the abdomen, causing the bird to become bottom-heavy and tip up.

The perfect toy for your desk, have everyone amazed as the relentless bird just goes back for more everytime.
For those that want to know here is how it works, but for those that want the lesson in thermodynamics, go back to school, and this time pay attention.



1. When water evaporates from the fuzz on the Drinking Bird's head, the head is cooled.
2. The temperature decrease in the head condenses the methylene chloride vapour, decreasing the vapour pressure in the head relative to the vapour pressure in the abdomen.
3. The greater vapour pressure in the abdomen forces fluid up through the neck and into the head.
4. As fluid enters the head, it makes the Drinking Bird top-heavy.
5. The bird tips. Liquid travels to the head. The bottom of the tube is no longer submerged in liquid.
6. Vapour bubbles travel through the tube and into the head. Liquid drains from the head, displaced by the bubbles.
7. Fluid drains back into the abdomen, making the bird bottom-heavy.
8. The bird tips back up.

Please note: This is not a childrens toy, the red liquid can cause skin irritation if the Drinking Bird is broken.