You bought six, two died almost immediately, by Sunday there were four, but one was acting really sick in the gravel. By Tuesday, you discovered one of the four dead, possibly the one that was in the gravel, and another that's acting at deaths door... and another outright missing and presumed dead, and one apparently healthy chick... So you have two of the six left... is that right?
You have some that are nearly twice their age (at 7 weeks old), and some that are younger at 2 weeks old... is that correct? And of these 2 week & 7 week old chicks, all seem healthy.
I see the picture of your little one dead on the grass, so I'm guessing they've had free reign of a beautiful yard, garden or run. I'm so very sorry for your loss. Pictures of everyone's poop will help isolate the problem, a picture of the vent of your sick chick too, and if at all possible, a photo of the chick's posture. Did any of your sick chicks breathing sound labored? Any sneezing, coughing, shaking of their heads? Dirty butts?
