This reminds me of when a flock of young Starlings stop in my gardens and find the birdbaths. It isn't unusual at those times to have a group of 6 to 10 birds in each bath, the drops of water flying everywhere, glistening in the sunlight.
Trying to make your backyard more attractive to birds? Just add water. Birds need a dependable supply of fresh, clean water for drinking and bathing—few things are more attractive to them than a well-maintained birdbath.