My chickens are dummies

OMG! My mother called me today to yell at me because it was raining and I was at a DR appt. She claims that since I didn't bring in my chickens, they would look up at the rain and drown! I would come home to 3 dead chicks. I pulled into my drive, and my chicks were outside rooting in the freshly wet dirt!!!! HAH!! Besides, they have a covered run, and their coop is water tight. Geez!!!! They just aren't smart enough to come in out of the rain. Steph