Before going out to walk, I looked at two thermometers. The one on the deck showed it was just above freezing, while the one on the back porch proclaimed it was just below freezing. Maybe I should check what the birds were dealing with. From the top, the birdbath didn’t look bad.
Here is a selfie of the ice and my hand.
Taking the ice out of its mold, I set it on the railing. Can you see the round hole in the top where I poured in very hot tap water?
On a hunch that the underside would be interesting, I turned the mold over. There seem to be strands of ice from the rocks to the surface, working to tie them in firmly. When I showed grandson David the photos, it occurred to me that the rocks were poking above the water. I have little scientific knowledge, but I wonder if the rocks were colder than the water. That could explain why there was extra ice attached to them.
Ice couldn’t argue with Spring sunshine. When I thought to check on the rocks three hours later, they were dry, though sitting on damp wood.