Baby chick standing off by herself

[Guppy7]

I have 4 about a week old baby chicks. i’ve had them for a week and one of the baby chicks is now standing off by itself away from others. she is pooping but not running around like she was. Any ideas?

 

[GodLovesU]

Does she have any other symptoms?

 

[Guppy7]

She now has watery poop and i thought maybe impacted crop. her vent looks a lil swollen

 

[GodLovesU]

@BigBlueHen53

 

[BigBlueHen53]

Pic?