Chick is making weird noise - is it sick?

[Luludelulu]

Hey all, anyone have an idea whats up with this chick? Chick is making a wailing type noise and chirps every now and then. This started just today, the chick is active and running but lagging a bit behind its siblings. What could be going on? Idk how to embed video, so I'm linking the reddit post I also put this question on with the video - Reddit post

 

[CombNWattles]

Does it do that when it’s with the other chicks? That sounds like the ‘separation’ call.