8 day old Gold Lace Orpington chick dying.........dying......

He may be constipated. No carrots, he's too young. Food could be moistened with water, some need this.
This is a life-threatening condition often seen in chicks with pasty butt. Either they fail to drink enough or their gut is unable to process the water normally. Electrolytes in early stages.

A last-ditch effort can involve immersing his lower body in warm water, but you must be prepared to keep him warm and the process can take up to an hour, fully supervised and ensuring you gently hold his head up so he does not inhale water. If it works it will get messy as he voids the masses. You may have to repeat this many times over the next couple of days. Chick must be warm at all times and especially warm after coming out of water. Suggest you use heated towels when drying him.
Other threads by members:

https://www.backyardchickens.com/se...ISO-8859-1&q=constipated+chick&sa=Search#1305

 

Hmmm...this is perplexing. Is he the only one from the bunch with issues? THey are a bit young for treats; I'd discontinue the carrot treats and just make sure they have the starter; it's got everything they need.

Typically, respiratory issues are caused from damp bedding - is there any way they could have spilled water, and gotten their bedding wet? What type of bedding are they on?

 

Start the baths now, then. You're running out of time.
And don't blame yourself, there is probably something wrong from the beginning, before you got him.

 

Keep us updated!

 

All you need is a bowl warm water and towels or rags.
Hair dryer, maybe.
Be gentle, patient, this is going to take time. Get someone to make tea for you!

You want to keep his vent immersed, rehydrate him without chilling him, and hope the water entering the vent moistens the mass enough for him to evacuate.