Global bath for high flyers

I picked up a discarded dustbin lid this week, sensing it could come to good use. Simultaneously, my MTF (most travelled friend) decided to shed a collection of stones she had collected from around the world. The rest is obvious. My plot now has the most luxurious bird bath any high flyer could dream to splash in, surrounded by pink quartz, petrified wood, hues of turquoise, greys, black, sandstone. My feathered friends just have to find it...