Shipped Whirligigs do not come with a yard stake due to shipping costs. They do come with a nylon insert for use with a yard stake.
The most common and easiest to procure yard stake material is a simple wood 2″ x 2″.
HomeDepot sells 36″ and 42″ long 2″ X 2″ railing supports, and that are perfect for yard stakes, in Jacksonville, FL they are less than a dollar each.
The PVC yard stakes JaxWhirligigs make are 3/4″ PVC pipe cut to approximately 30″ in length, A 3/4″ wood dowel cut to approximately 4″ in length and 2 3/4″ pan head self tapping machine screws.
We drill two 1/8″ holes in the PVC approximately 2″ and 3″ (offset) from one end and insert the 3/4″ wood dowel so it is flush with the top and use the two screws to secure the dowel.
Regardless of what you use the Insert that comes with your Whirligig requires a 3/8″ hole approximately 2″ deep to be drilled into the wood and the insert pushed in.
Some folks have been known to use a 2 foot long 2″ x 2″ piece of wood and secure it to a fence post to place their Whirligig higher. Whatever you use to mount your Whirligig remember the wingspan, for instance a large Eagle requires at least 28″ in top and bottom clearance, smaller Whirligigs obviously would require less clearance.