I bought a pair of Gold Brabanters last year around September, and the female just started laying eggs a few months ago. I've kept some in the incubator before, but after a day of breaking a small hole in the egg, they all die, like they gave up. That happened with 4 of them. Then this past week I had two hatch that I kept in a box with water and food and a heat lamp that I use to raise other chicks that works every time. Those chicks died in the middle of the night. I don't know why. If anyone has any advice or know why its happening your response will be much appreciated.

and Welcome To BYC! Sorry about your chicks. TwoCrows gave you some good advice about figuring out where the problem may be. You may also be dealing with a genetic or health problem or line that just is not very strong, if you have other fertile eggs from hens whose eggs you have hatched with no problem before, that you can set at the same time as a breed you are having problems with, it is sometimes helpful to do that, if the extra eggs do and hatch fine you might want to look at the problem breed parents and their health.
