I have done some of mine each of the last 3 days. Mostly because I had a new roo in with a bunch of these. Looks like he was doing his job. I have never seen him mount a hen, but I am not out there that much. I have a couple of clears it looks like from the first couple I saved, but the last ones look good. So I don't know how many are good. I did not try to do the BCmarrans as they are just to dark to see anthing until 10 or 12 days. Then they will be really dark maybe can see a little shadow if clear. They are new layers , with a proven roo, so time will tell.