It started just two nights ago. After the rains, I could hear a few Copes grey treefrogs (Hyla chrysoscelis) calling nearby, including one that had to be in the backyard. I was checking on other things, so it took me just a couple of minutes to get to the approximate location, and by that time, she’d achieved her goal.
Seen here in the residual water atop one of the rainbarrels,