We bought 8 baby chicks from Tractor Supply on Friday 3/13 they are very little and still have crust from their belly cord but were doing fine. We got them home and put them in a tote like container with a wire lid and placed a heat lamp over them. We gave them water and starter food and they were doing great. Later that night we went to check on them and 2 were laying down and soaking wet. After a little research we found out they had sour crop and with further research were able to treat it and they were lively again in a few hours. Saturday morning rolls around and they are all fine again. Sunday arrives and the one from Friday night and a different one were ill and not chirping and laying over almost motionless. No sour crop and they were dry. After force feeding them a little water every half hour or so and spending all day confined and under heat lamp they passed away Sunday night. Now I wake up to find another one dead this morning. Whats happening? Is it because they are so little or did we do something wrong? The others are doing great and thriving. Any advice would be helpful, thank you.