I've seen a mother cat just take one cat out of the bunch and hide it. Probably thinning the herd to strengthen the rest or so she can keep her strength. It doesn't look like it here, unless there is more footage of the kitten in a hiding spot.
I wonder why some mum cats get mad at dad cat whilst others are quite loving. Always thought it was a general mum-protecting-litter type behaviour but I guess it's not?
"The orange one escaped again"
"He's just like you"