Thanks so much for the quick response. The parents are fed a racing pigeon mix to which I add a 15% protein laying hen pellet at 5-10%. At the time of weaning, the total lack of feather development is very apparent under the wings, and weanlings retain the yellow head down until 6-12 weeks of age. The ceres above the beak remains fleshy and does not turn white. At first I figured it was genetic but now I have a squab from a totally unrelated pair with the same condition. All have been from single hatches, and tended to be splay legged. The first set of parents that have weaned 2 consecutive abnormal squeakers previously had 4 normal birds.I would assume it's nutritional. We get in the occasional misdeveloped baby from wild pigeons (though not specifically what you describe), and they usually do fine once they're fed a nutritionally complete formula. Or they die soon after they come in because we got them too late. If the feathers are the only issue, they wouldn't die from that though. There must be something else going on.
What are the parents fed? I don't know what an appropriate diet is for them, but someone else should be able to give you tips.
To correct the splayed legs, at 10 days of age I secured a rubber band between the permanent band on the right leg with a temporary band on the left. That helped, but provided too much stretch, so at 15 days, I replaced the band with yarn and shortened the distance, and that is much better. I will remove soon and see what happens?The splayed leg can be corrected. And the sooner you find it, the easier it is to treat.
I like your idea with the band aids; I will try that as it would provide more stability than the yarn. The photo helps a lot to show the proper spacing. Thanks for the advice.The yarn probably isn't going to pull it in enough, as it does stretch some. You can tape them, but have to wrap legs first so tape doesn't stick to the leg. I have used band aids. I put one around one leg, so the telfa pad is around the leg, then stick the 2 sticky ends together like a tail, going toward the other leg. Then do the same on the other leg, only stick the sticky ends to the tail made from the other band aid. You need to pull it in close, where the legs would be normally. If you leave them going outward even a little, they will be worse when healed. The bird will never be able to walk well, and as they grow up the legs don't support them well.
OK will pull in closer. I have been shortening the distance between legs every few days, but I guess I need to just bring them in now. Squabs don't get any direct sunshine, but I make them drink the adult's water once a day to which I add liquid vitamins, including D.Just be sure to pull them in where they should be. If you allow them to go out, even a little more than they would normally be, they will be more so later on. Be sure to add a bit of calcium and D3 to his diet. Or calcium and time in the sunshine for the D3.