Quail chicks

We recently bought a batch of 36 quail eggs to hatch in the incubator. We need to renew our stock of birds but also widen the gene pool. The quails we hatched last year were from our own eggs so we need to avoid too much inbreeding. Alas, we have not been too successful with hatching the recently purchased eggs. Only 10 hatched and we are already down to 7 chicks. We will purchase another set of eggs in the hope that the hatch rate is better.