Yeah me too. Maybe the same place. I had 2/3 of my first years flock sexed wrong and 1/2 of the hens died. Which is why I didn't go back the second year. Last years was a good flock until the attack. So it's taken 2 years of learning and doing and I know i'm nowhere near done learning. But I enjoy the learning, just not the losses.People who guarantee sex of chicks should be accountable. Unfortunately some of them are not responsible. I got burned that way with my first chick purchase. At least five of twelve hens crowed and did other rooster things. I was so gullible, I even returned the roos, believing they would be replaced with hens of a similar age and breed. As I said ......... s l o w.