Got some cute video of the tiny kit at the feeding platform. I don't think they are still there. It appears they left the night I found them there. Something may have happened to the original den and mom just needed a place to stop and regroup with the one kit she had. It's unusual for one so young to be out traveling with mom yet so I hope they are safe. It will be a lot easier for mom to keep an eye on and protect just one kit though so hopefully things will go well for them.
These kits are the proper size to be out traveling with mom now. You can see the difference between the little guy and this crew! As you can see it's quite a busy station which is why most don't use the den box up there....it's just a place to hang out while visiting each night, however it is good for emergency situations as may have been the case here.
No sign of mom or kit after this so hopefully she got the little one some place safe...although I have to say, it was pretty good at getting around! Mom wasn't carrying it up and down the tree....he(or she) was doing it all by itself!
Good luck little one....I'll be keeping my eyes out for ya to see how you do!