from what I have seen on all these forums, I don't think there is a sicker animal, than a chicken. Mites, lice, Mareks, Newcastle, Coccidiosis, fowl pox, mycoplasmosis, avian influenza, samonella, bound egg.... then there is the quarateen
Well let's just look at a few horse diseases for comparison. Here's what AI offered up:
Common horse diseases include contagious viral diseases like Equine Herpesvirus (EHV) and Equine Influenza, and mosquito-borne illnesses such as West Nile Virus and Eastern/Western Equine Encephalitis. Other common issues include non-contagious conditions like colic and laminitis, and bacterial infections like strangles. Vaccination and proper veterinary care are crucial for prevention...
Not to mention the myriad ways horses have of trying to kill themselves, each other and their owners, often with no malice whatsoever ... dogs and cats also suffer from a multitude of maladies. As do goats, sheep (oh, don't even get started on sheep, sheep will die if you look at them cross-eyed!). If you hang out at any forum dedicated to any of these critters (lizards ... fish ... anything, really), you'll come away amazed that ANY creature manages to survive outside the womb without constant intervention.
Chickens are actually amazingly tough and resilient. Unless you're particularly squeamish, you might follow some of the threads where chickens have suffered extreme physical trauma, mutilations, even amputations, and survived. Not their heads, though. I don't think I've seen any instances where a chicken survived a head amputation.
