Maybe he has these:
Kinky Back
Incidence: common chicken ailment in broiler flocks
System/organ affected: joints or vertebrae
Symptoms: in young broilers: arched back, extended neck, feet off ground, struggling backward on hocks to move around.
Cause: unknown, possibly hereditary.
Transmission: genetic or feed related. Does not spread bird to bird.
Prevention: breed for resistance, do not feed for rapid growth.
Treatment: none; cull
Leucocytozoonosis
Incidence: only in areas where biting midges and blackflies are present, especially during summer and fall. In North America it occurs in southeastern states, Minnesota and Wisconsin.
System/organ affected: blood
Symptoms: in young birds: droopiness, weakness, lameness, fever, loss of appetite, increased thirst.
Cause: protozoan parasites that infect many other kinds of birds more often than chickens.
Transmission: spread by biting midges from infected or carrier birds, does not spread through direct contact.
Prevention: control blackfiles and midges.
Treatment: ineffective, recovered birds are carriers and will never lay well.
Marek's Disease
Incidence: very common chicken ailment worldwide; occurs more in large breeds than in bantams.
System/organ affected: organs, nerves, or skin.
Symptoms: in chicks: growing thin while eating well. In young birds: enlarged feather follicles or white bumps on skin that scab over with a brown crust, lack of coordination, pale skin, wing or leg paralysis.
Cause: six different herpes viruses concentrated in feather follicles, shed in dander, survive for years in dust and litter, inhaled contaminated dust, hatching eggs.
Prevention: breed for resistance, practice good sanitation and provide good ventilation, keep turkey with your chickens because turkeys carry a related but harmless virus that prevents Marek's from forming and causing tumors.
Treatment: none, cull.
Hope this helps
