They will come half a dozen at a time, co-existing while playing in it!
I also have a weighted animal feeding bowl on the ground for the neighborhood kitties and squirrels, all this under the shade of a large pecan tree.
We have a large variety of birds, but one of the robins who comes often stands out.
He is much larger than the others, and his favorite thing is to drink from and then hunker down in the LITTLE BOWL (6" square) and bathe endlessly, ignoring the others who pressure him to give them a turn!
It is so funny to watch him - named him 'The Intimidator.'
I love birds, all kinds, except for the Scrub Jays, they are mean to the little ones who come to the feeders. I know it is just their nature, the way God made 'em, but they are the neighborhood bullies.
In the late winter we have the tiniest, cutest little Goldfinches. They come to play in the fountain out front, like it is their own personal spa. Often there will be 15 to 20 of them all sitting around the edge of the fountain or splashing in the ice cold water. They only stay a couple weeks, then they move on. It would be a sad world without birds.