If you want to make your own birdbath here is a really easy way to do it. Stack 2 terra cotta pots on top of each other, to ensure they hold glue them with a high quality craft glue like E6000 which is waterproof, paintable and clear.
then, glue the drainage saucer to the top of the pots. paint it with any design you want. if you’re not particularly crafty you could paint it a solid color, then apply a stencil to the side of it.