- Drinking Bird
Once it starts, the bird wont stop drinking! Be amazed by this science classic. A change in temperature begins a chain reaction that keeps the bird in perpetual motion. It endlessly dips in and out of a glass of water. A crowd pleaser offering hours of science entertainment.
Age: 8 + with parental supervision. This is not a toy, it contains methylene chloride (an industrial paint solvent) encased in fragile glass.
What you get
Drinking bird (Height is 17cm. Comes with either blue or red liquid inside glass bulb.
How does it work?
There are no batteries or wires, what keeps the bird dipping to take a drink? It seems scientifically impossible. The energy to keep the bird moving actually comes from the surrounding air. Just wet the birds head to start the process. As the water evaporates, the head becomes cooler than the blue liquid in the body. This results in vapour condensation in the head. The condensation, in turn, evaporates and shrinks making the air pressure lower in the head than the body. The low air pressure causes the blue liquid to move up into the head, tipping the balance. The beak is submerged in water, the pressure equalizes and the fluid flows freely to the body, the now bottom-heavy bird tips upright and the process starts again.
- Prinicples of energy.
- Vapour pressure.
- Condensation and evaporation.
- Liquid properties, like those of methylene chloride, a volatile liquid that evaporates easily at room temperature because of weak bonds between its molecules.
- Balance and centre of gravity.
Getting started - place a glass or cup full of cold tap water in front of the bird. The birds legs should be a little higher than the glass. Submerge the birds felt head in the water to get the bird moving on its own. If it does not start to bob, adjust the neck of the bird up and down until you get movement. The bird will bob then dip its beak into the glass of water every so often, the rate dependent on factors like the temperature of the room. But expect a dip to happen in under a minute. If you find the bird's glass bulb is knocking the cup after it takes a drink, slide the metal collar down slightly to stop it.
WARNING: CHOKING HAZARD Small Parts. Not for children under 3 years.
|Age Group||9-10 Years, 11-12 Years, 12+ Years|
What are the shipping costs?
FREE Shipping is available on all orders over $120 to anywhere in Australia!
Orders under the value of $120 incur a low flat rate shipping cost of only $9.95 to anywhere in Australia.
Express, Registered and International delivery options are also available. The cost for these premium shipping services will be automatically calculated during the checkout process. Please conact us if you have any queries with these services.
In some cases we may need to apply a shipping surcharge to large or fragile items, especially to remote or non-urban locations. You will be contacted by us for confirmation if this additional charge is applicable.
How long will it take for my order to arrive?.
You should receive your order within 2 to 4 working days, although to some regional and out back areas it can take up to 2 working days longer. Orders going to WA also take a little longer, up to 6 working days.
All standard orders are shipped using Australia Post's eParcel service, so you'll be kept fully informed of the progress of your order during its journey to you. Aside from receiving regular email updates, you can enter your tracking number into Australia Post's website at any time for information about the delivery status of your order.
International delivery will take from between 1 to 4 weeks depending on the destination and potential customs clearance delays.
When will my order be shipped?
We ship every Victorian business day. Orders received and paid for by 12pm AEST time will generally be shipped the same day.
If you require your order urgently, we have a next day delivery express service available.
What locations do you ship to?
We ship to both Australian and International customers.
What shipping options are available?
The majority of orders are shipped using Australia Post's trackable eParcel service, with larger orders being sent by national courier.
We also have options for express or registered post. A number of international delivery options are also available. These can be selected during checkout.