Help!!! Urgent!!

This little baby partridge cochin arrived with two other ladies yesterday. Everything was fine yesterday. She still can walk around and drink water but she’s really slow. Vaccinated for mareks disease.

Using nature serve unmedicated feed with probiotics + prebiotics. Also have one waterer with water and the other with electrolytes (strong animas first peep)

No pasty butt, although I’ve been having to clean the three of them off yesterday and today as some was forming. But vent is clear!

Also, brooder is on a slant. The back of it is very close to the ground.