I raise BCM and am curious how you incubated the eggs (temp/humidity). If they were handled roughly (I know you said these were sourced locally), that can potentially cause damage that may manifest as deformities, too. Poor hatch rates can be caused by a number of factors.
While it's tempting to want to blame "inbreeding", or unhealthy breeding stock, the fact that this occurred in just one chick isn't strong support for the hypothesis; if several had similar deformities (did you do eggtopsies on the unhatched eggs?), then that's a pattern and might be more persuasive.
It's sad that the chick tried so hard to hatch but had such obstacles to a good quality of life.
My condolences.
While it's tempting to want to blame "inbreeding", or unhealthy breeding stock, the fact that this occurred in just one chick isn't strong support for the hypothesis; if several had similar deformities (did you do eggtopsies on the unhatched eggs?), then that's a pattern and might be more persuasive.
It's sad that the chick tried so hard to hatch but had such obstacles to a good quality of life.
My condolences.
