Last Winter the favorite spot for birds to bathe was the frog pond. Here is a Song Sparrow taking a bath today. It is 54 degrees, but they don't care.
This year birds are clogging up the new one. They really like it, often there are a dozen at a time in it.
A close up of the first photo shows that even on a cold day, danger is present, note the Bullfrog. Like the bird, you may have missed him in the first photo.
I have seen the frogs jump at birds, so far without success. You might believe a frog is not big enough to eat a bird, you might be wrong. Here he is crawling out.
He is very fat, and definitely eating something to get that way.