I think the nibbling legs may just be engrained in their behavior, especially when they see a freshly molted soft limb. The odd wings though, I suspect it’s inbreeding. This particular one died on me, so it may have had internal abnormalities as well. Best of luck with your Dominos!
Thanks for your reply! They have a sea sponge that’s soaking wet in their food bowl. They always have oak leaves and almost always have something else to eat like oats, berries, squash, grapes, tomatoes. I’ve seen even the smaller ones get into the food bowl, so I doubt they’re having trouble getting into it.
As with all living creatures, a varied diet is healthiest.
Stay away from Layer's mash (for Poultry birds) as there is such a high level of calcium it can cause moulting difficulty due to the shell being overdeveloped.
All the best from Bill.