I'm not quite sure why you felt the need to break so many open when they'd barely been incubating 4 days. I've been incubating eggs for a very long time and I don't even candle generally until day 7 at the very earliest. I never toss any until at least day 10.
It is the risk you take when you buy hatching eggs via any auction site or online seller........BYC as well as the rest. Shipping can jostle fertile eggs around to scramble them so they appear infertile.....I'm sorry but I don't think breaking them open to check for fertility after they've been incubating really can tell you much of anything.
It is the risk you take when you buy hatching eggs via any auction site or online seller........BYC as well as the rest. Shipping can jostle fertile eggs around to scramble them so they appear infertile.....I'm sorry but I don't think breaking them open to check for fertility after they've been incubating really can tell you much of anything.