Hi!Hello fellow Maran friends!
I was trying to search for an answer for my questions but haven't been able to yet, so I will turn to you. I have 2 breeding pairs of Black Copper Marans and I startet incubating their eggs. They were fertile and developed well but didn't hatch. 2nd hatch went the exact same way. Are the chicks having a hard time getting through the thick dark shell and hence hatching rate isn't great, or do they need different treatment than other chicken eggs? I did eggtopsy on all eggs and the chicks looked wonderful- just never hatchedAm I doing something wrong? I had other eggs in the incubator with them and they did fine.![]()
When you looked into the unhatched eggs did you see one or both of the membranes sort of shrink wrapped around the chick or were the membranes nice and moist? If they were shrink wrapped and dry around the chick or perhaps even stuck to the chick, then yes, they could be having a hard time getting out of the shell and probably require a higher humidity during lockdown to hatch.
Did these eggs pip? Or did they just develop and die?
How did you temps run during incubation?
Sometimes the developing chicks can have a vitamin deficiency which can cause low hatch rates. Their are a number of reasons that they may not have hatched.
I say try setting some again and watch your temps and humidity closely, don't fret over them but watch them. I get the best results when I run the temp at 99.5 and a constant humidity from start to finish of 50-55%.