It’s really interesting, how it works. I don’t think mine was caused by genetics just because my pullet dealt with a lot of injury and delay, so it could have easily been one of the other reasons. I love mine, but that’s just because I’m a sucker for special needs chickens. They are so sweet, and all of mine can eat on their own. They don’t need any kind of special help other than beak trims every now and then. I can understand why you culled yours. They can be hard, and not everyone has the time. If I were in that situation, I would probably have to do the same.Ive had an easter egger get it weeks later had nothing to do with an injury. But personally hate crossbeaks and last ones I had from the hen all were culled I dont have time for birds that cant eat on their own