Dead chicken...how?!?

[wallace707]

Oh I understand ur not diagnosing

.... Just any of the possible scenarios are upsetting, and I couldn't do a thing for him

 

[ChickenCanoe]

One thing new chicken owners need to know is that chickens die. If dogs died at the same rate, most people wouldn't own dogs.
Chickens make great pets but they are also livestock.
I'm not saying this applies to you but most of the problems that arise are avoidable with good management. Silkies and seramas are more fragile but most breeds would do quite well living outdoors 24/7. Chickens aren't dirty animals but the way they are housed makes them seem so. The only reason to provide a coop is for predator protection at night. The more space, especially the outdoor space and the lower the stocking density, the better off they are.

ETA
As I said earlier, there are many things that can cause sudden death.
Besides being squashed or breaking their neck from hitting a wall or roof, other things at 3 months of age, common things could be:
Sudden death syndrome
ulcerative enteritis
campylobacteriosis
colibacillosis
Marek's
gout

Less common things could be:
infectious anemia
necrotic dermatitis
round heart disease
aflatoxicosis
botulism
cholera
choking
pesticide poisoning
anaphylactic shock
erysipelas

Many of those have no cure or no good one. That's why a lab diagnosis is important with unexplained death. If a second one dies in short order, it's imperative.