I am attempting to add black copper Marans to my flock. I have had an extremely good hatch rate with my bantams and successfully raised 17 day old cuckoo Marans. HOWEVER, the black coppers seem to not have as great of a success rate. I have purchased 3 batches of fertilized eggs (one hasn't arrived yet). I happen to have two broody hens and have placed each of the batches under a hen. The first hen has hatched 1 chick out of 6 eggs and is still sitting on 3 (the other 2 died). The other hen has kicked out 6 "dead" eggs so far and should be hatching the rest today or tomorrow. Has anyone else had a better success rate hatching black copper Marans under a hen (there seems to be a high mortality rate using incubators)? Any tips?