Found this hollow ceramic bird in a box of old kitchen stuff. It has a hole in the beak and the bottom. No idea what it's for.

Pie birds have been used for centuries, with their origins tracing back to Europe. The concept emerged as a practical solution to a common problem faced by bakers: how to prevent pies from spilling over during baking.
The distinctive bird shape became popular in the Victorian era, partly due to its aesthetic appeal and partly because the bird’s beak provided a natural and effective steam vent. Over time, the design evolved, but the core function remained the same.
4. Spotting the Clues: Beak And Bottom Holes, Glaze, And Shape
To confirm if your ceramic bird is indeed a pie bird, look for certain features: a hollow interior, holes at the top and bottom, and often a glaze finish. The beak and bottom hole are essential for its steam-venting role.
The glaze not only adds a decorative touch but also makes the ceramic more durable and easier to clean. The shape, while often resembling a bird, can vary widely, adding a touch of personality to each piece.
5. How To Use a Pie Bird Step-By-Step in Your Next Fruit Pie
Using a pie bird is simple. First, roll out your pie dough and place the bottom crust in the pie pan. Position the pie bird in the center of the crust before adding your filling.
Once the filling is added, place the top crust over the pie, making sure to cut a small slit to accommodate the bird’s head poking through. Crimp the edges of the crust around the pie bird to seal it in place. As the pie bakes, the bird will guide steam through its beak, keeping your pie crust crispy and delicious.
6. Why Bakers Swear By Pie Birds for Preventing Soggy Crusts 

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