The hard part is getting it ‘bird friendly’. Most of the birds do not like full sun, nor full shade. They don’t like the bath fully exposed (hawks can get them) or in brush (cats can get them). If you put the bath under a tree, the tree can die of over watering. The bird brain is picky! Most birds prefer a bath that is partially exposed with very low vegetation under it but a tree or shrub nearby so they can land in the tree and hop or fly a short distance to the bath or fly from the bath quickly to the tree if danger approaches. Put the bath near the edge or dripline of a tree or bush that likes a lot of water.
Source: Las Pilitas Nursery