My wife and I just got our first flock of 6 a week ago. At the time we picked them up, we were told there are 1 or 2 that are probably not laying. We are 95% sure of two as they are old, so we figured we have 4 layers at the moment. We've gotten anywhere from 1 to 3 eggs every day since we brought them home for a total of 17 since last Saturday (which I thought wasn't too bad for 4) but we suspect there may be a 3rd non-layer. We identified 2 of the layers as they've gone up and laid while we stood there (a Dominique and another we aren't sure of). There are two that we think either are laying slower or 1 is not laying and getting credit I didn't know (besides just making an isolation pen and moving the suspects into it one by one for a couple of days each) if there were any physical signs with the vent or other characteristics that might out a freeloader.