Baby chicks dying

[Lisauz]

This is what she’s doing now

 

[AllenK RGV]

This is what she’s doing now

They look well feathered out enough now I would consider not worrying about heating them much at all indoors. The method I use is here and always using an additional thermometer to confirm I am not overheating:
https://www.backyardchickens.com/articles/brooding-with-mama-heating-pad.67728/

 

[Lisauz]

I just want to know why she’s dying or acting like the others did before they died. If they have been on corid for three days wouldn’t that be long enough?