So I checked my chickens' feet today and get this 3 out of 5 have BOTH feet with the tell tale round scab!!!!!!!!! BUT nothing under the scab. So question is...... Is the scab bumble foot? Chickens are fine. No limping or anything else! Nothing under the scab as I said too. What can I do? Just monitor until it becomes a problem???? ALSO.... Anything that would cause "mass epidemic" of this???