Find co op supply store that’s were I got mine they have also chickens and rabbits sometimes other birds or go on craglist ir offer up or if you want you could hatch some yourself
Try having a larger container or multiple because they are probably overcrowded in one container if they are on the edges of the container there probably hot if huddled up cold if they are running around then it’s just right or they are spread out.
I got some quail chicks from craglist and some started to die each day they had water feed and a heat lamp. So does anyone know what could have been the cause of then dying?