Awww, blossom and disco look like they'll be good friends. Glad they will both have a companion.
Now the one with the legs. Hmm. Has he absolutely no muscle tone? Does he try to stand up on them?
I've done chick-in-a-cup therapy before with mixed results. Type chick in a cup in the search bar to see how to do it.
If he has no muscle tone at all it doesn't look good for him.
Helping them hatch is a mixed bag. Maybe 40% of the chicks I've had to help over the years have had a great outcome and gone on to thrive and be healthy happy chickens. Sometimes they are just unlucky when they try to get in position, more often, I have failed them, normally with humidity. The rest there is a developmental issue. The others either don't make it, or have other problems ultimately and I wish I hadn't. But the 40% is enough to make sure I will keep trying to help if I can. My gosling Ozzie is a prime example. He had a terrible hatch - he was upside down and inside out and pipped but didn't progress, then the humidity got messed up. I helped him most of the way but then he had a dodgy neck - couldn't hold up his head, and then got spraddle leg too. Then he refused to eat or drink and I had to force feed him water and pedalyte, then later boiled egg yolk, until he finally got the idea. It was a hassle, but the more I tried to help, the more attached I got so it spurred me on. But now he's 5 weeks old, and a massive ball of fluff (bigger than my full grown hens), and sure, he's a bit, um, well, he's not poultry-university material let's say, but he's physically completely healthy, and I am glad I did everything I did to get him where he is today. So sometimes its worth it.
On the whole it they are very late at hatching I leave them as there is a much higher likelihood of failure...
If the pip on their own but get shrink wrapped, or they part unzip then stop, and if they are day 21 then I'll help...
Love the chick photo shoot mrs guardian!
My nine are still not eating or drinking, despite my regularly tapping/pecking at the feeder/waterer. I've only seen one drink. Instead they all try to cram under my palm which is so cute. I will keep trying to show them every few hours. I know once one gets it they all will follow.