we received 24 chicks this Wednesday morning, all have been active, eating/drinking/pooping until today. One (we believe it is a Cuckoo Maran) is acting lethargic, not eating or drinking this afternoon. We noticed she has been straining a little while pooping and this morning appeared to have pasty butt. We cleaned her but now she is not eating or drinking and it just standing in a daze under the heat lamp. She just passed what looked like clear goo. Any suggestions to perk her up?