Cornu aspersum! No, I am not casting a Harry Potter-type spell. That is the Latin name for garden snails and right now there are lots of them on my patio wall. They are trying to escape from drowning in the soil of the planter by inching their way on to the ledge and then down to the place where the ledge overhangs the wall.
Snowbird of Paradise 
[…] year, when it rained steadily for a few days, I had lots of snails on, under, and around my patio wall, trying not to drown. This year, when it rained in January, […]