My husband and I were at the coop, feeding and petting all the chickens. I thought he was tapping on the wood, like knocking on a door, three rapid taps. He said he wasn’t. We realized one of our Speckled Sussex was making the noise! I’ve tried to research it, but can’t find anything. The only way I can describe it is knocking, thumping or drumming. It’s not continuous. Seems to be about 3 knocks, in the normal cadence of a person knocking on a door! Crazy! Does anyone know what it means?