Will check in later on friends!
Hope your turkey came out good.
Your chick is a beauty!
I know how things like to all happen at the same time to try and mess with us.

Our power was out for quite some time yesterday delaying supper a few hours since everything (even toilet flushing) requires power here. Glad it was just my small immediate family and one friend who were waiting it out... but it worked a little nice since my son and his gf were set to eat just 1 hour before I was supposed top serve. This way it was several hours and they were ready to eat again.

The hard rain and wind even let up for just a short time and my piggy was happy to make an outing to pasture.
Dumore crumbles and pellets,
Would that be a starter, layer, all flock or which type?
Here is the most accurate info I have seen put together in easy to understand terms with regards to Marek's...
https://www.backyardchickens.com/articles/the-great-big-giant-mareks-disease-faq.66077/
Hopefully that isn't it, I don't mean to scare you or cause any panic. The leg facing backward is a VERY commonly seen with MDV. But I always try not to jump to conclusions, as I stated earlier many other things can look similar. To be honest, I doubt injury... but hopeful that's what it is. (much easier to recover from)
Some people make a sling to get the bird off it's leg and practice stretching and baring weight on it....
While eggs, meal worms and other insects are good source of protein, amino acids, and other vitamins and minerals... they are VERY high in fat, so should be fed in limited quantities. Eggs for example are 34% protein but 64% fat by energy. Corn is very low in protein at only 7%, but it has even less vitamins, mineral, and important amino acids. When our feeds are made of mostly corn they have that stuff added in. Seeds are very high in fat as well. They also may not need to be hulled. Many people feed
black
oil
sunflower
seed... I don't know the difference in nutrition between standard grey striped seeds and "BOSS" but that might be worth looking in to for ya.
I might suggest a supplement (on occasion) like rooster booster (brand name) Poultry Cell (product). I have bred and raised Silkies for several years... I always feed 20% protein flock raiser or sometimes cheat and feed even higher protein like game bird or turkey starter like during times of molt. I DON'T diminish nutrient with treats. But despite that my recent hatch result DO indicate a possible riboflavin deficiency. Some birds just may not process things as well and need more than the standard nutrition that works for most. Here is some information about what the different type of things can cause...
https://www.merckvetmanual.com/poul...ement-poultry/vitamin-deficiencies-in-poultry
Just
in case you happen to feed corn "to keep them warm" as some have been misled to believe... that is a myth... the body processes CALORIES to stay warm. Calories (energy) from nutritious sources are ALWAYS better to feed than the candy bar or chips of the chicken world. Protein and carbs have the same amount of energy... but protein is a better source of nutrients IMO. Of course carbs are a necessary source of things like fiber, energy, and such... so I don't mean to suggest anything radical like atkins diet.
So, even if it is a vitamin deficiency... it can take several weeks for full recovery to take place after supplements have started. It seems to be a slow process, that may include some physical therapy. Some may not see recovery at which point you have to decide is this the life you want for your bird and yourself. (usually extra time spent cleaning them and such). Should the chick not make it... only way to verify if Marek's is by getting a necropsy done. Cheap or free in many states to back yarder's.. I have links if you need them.
In fact even with vitamin support, if recovery does happen... it still *could* have been Marek's. Many people have Marek's birds living in their flocks that go though times of weakness or lameness and recover. I personally cull for it... though I haven't yet had confirmation since the state vet said that's what they "thought" it was in one case that presented here, I didn't send the one bird in for testing. Now I wish I had in case that wasn't it... or was. I assumed they were right since I didn't see ANY way it could have been a deficiency since I don't give treats... but my hatching research leaves me to wonder now.
I know there are many other people who would have input on this subject.. but they may be traveling, out of power, or shopping. Hopefully you will get some more input... more experience and perspectives is always better for brain storming. Hang in there!
