I picked up a few dozen coturnix quail eggs from a local guy and popped them in the incubator last Friday. So this is day 6 or 7 today. Every single one of them looks clear. I see no veins or variation between any of the eggs. I'm having trouble finding images online of quail candling timelines. I know with turkey eggs you have to wait longer to see development. With chickens it would be obvious by now. Just not sure with quail. At what point is a clear egg a definitive 'infertile'? I am hesitant to believe all 50 eggs are infertile, he's got a really nice set up. I've hatched quail eggs but never actually bothered candling them before. Can anyone link me some resources? Thanks!