Thanks! I appreciate the response. I won’t worry too much about it.I think they are just hanging out. I have several hives, four out of seven that look just like yours in the photo. Mine are washboarding also and a lot just cover the face of the hive. It's hot here,in the high 80* F. Also,I treated with Formic Pro a little over a week ago so I have the bottom entrance reducer fully removed to give them a wide open entrance for added ventilation.