The two cases I have had in my flock beside the Blue Quail have been in my LF Columbian Wyandottes. One little pullet was fine until she hit 6 weeks and now at 8 weeks she has a full blown crossbeak where the top beak points off to the right at a 90 degree angle. She has been on the same chick started and broiler feed that the rest of the flock has been eatting.Kristen,
that's been what I have seen and heard too, that it's more, enviromental or damage to embryo or lack of dietary type stuff in the parents, and less about genetics of the birds. Though I have never done any intentional breeding of them myself to back any of it. Just what I have read on others who have.
I tend to get maybe 5 or so a year out of several thousand hatched. I have noticed they seem to be more on the rarer colors side of things. Stuff that isnt very commonly kept, so I'm betting inbreeding over many generations due to lack of new unrelated blood to work with has more to do with it than anything. Again, this is just a theory of mine. Stuff like silver quail for sure would fall into that group. Only a handful have them, and most are all related. That's why I started color crossing ( JJ too) with blues, lavenders, duns, etc. By getting a new color, you are also adding in new blood to an otherwise watered down color. The natural colored birds that are produced from this crossing can then be added to the flock and maybe help with this. My silvers so far , havent made any that I know of, but I do get some from the black mottled from time to time.
I have also noticed on the ones I see, they look perfectly normal for the first week or so, and the cross beak only starts showing later on. Do yall see the same thing?? This is what leads me to wonder about a dietary deficiency, that coupled with line breeding for too long I'm betting is the base cause of it.... again, just my thoughts.