So I'm posting more as an FYI more than anything now that I know what's going on. Last Spring we had to put a chick down. Didn't know then why. Came home from work today to a chick in the same position as that one. Head tucked up under itself and backed into a corner. Uncontrollable movements of the head and legs. Caused by a vitamin E deficiency. Earlier signs are weakness, fluffing of the feathers, and runny nose. After learning that today, the other chicks must be deficient as well. Too calm, acting cold (fluffed feathers, not cold at 5 weeks with a bulb!) and I noticed a couple of sneezes. Must have been using bad search terms or something last time. This time I found more information on it, and what it is. So for anyone else hunting around, I'll put in "chick with head down". I read to tube feed parrot formula. I had some on hand as luck would have it, and the worse off chick ate on it's own from a spoon after it tasted what was in the syringe. It perked up a bit, and we're doing feedings every 2 hours now. It might recover. Small chance. The others were caught in time. It can now sleep with it's head in it's wing like normal, but it still has episodes. But only when the head is lowered. So I've been holding it for awhile after feedings to keep the head up and prevent regurgitation. So we'll see how the little bird does. It's a relief to know what is causing it. Now I'm looking into why this fancy natural feed is causing it. Same feed as the last bird. Later onset this time, but I started them on something different. They must be picking out what they want and not eating all the feed, missing the supplements maybe. Off to the drugstore for vitamin E capsules, then the grocery store for Sunflower oil, Wheat Germ, Spinach, and turnip greens. While being careful not to cause an overdose, too much of it isn't good either. The worse off one will have a drop in the parrot formula, and the rest the natural sources of it. I hope this bird pulls through, it's a pullet!