Chickens dying, HELP

We have around 100 chickens, different breeds, aged 5 months to two years, no new chickens for over 4 months
They are in a 50' x100' run with 2" x 2" net overhead
They are fed Cumberland Mills 16% layer pellets and wheat fodder
Most of the chickens appear to have broken wings or leg so I thought that it is a predator( we are also losing rabbits),the turkeys are in a separate pen and they are fine.
I opened a couple of the chickens and they didn't have hardly any meat on them, the rest of them looked okay to me
Any ideas?

so are those pictures of damage you found done to your chickens, or pictures of them after you inspected them?

Most predators will leave plucked feathers and/or blood around. Are you convinced it was predators? It's hard to tell from your posts and pictures what we're looking at. Necropsy?

Sorry I wasn't clear, the chickens didn't have any outside damage, no feathers plucked just some had broken necks or wings.
The pictures are from me cutting them open.
Not positive it is predator but the coyotes are active and we have a lot of wild dogs lately, I thought it was a predator because we are also losing rabbits until I saw how small the meat was on the chickens

If dogs have access, that would be my suspect. The reason being that dogs will kill by tossing and shaking their prey like a toy.
They wouldn't necessarily draw blood or rip out many feathers.

Your best bet would be to provide a fenced off run, surrounded by hot wire, Good luck.

I'm wondering if this is not a predator but Marek's disease. If the birds are not outwardly injured but are suffering from lameness, wryneck and perhaps a dropped wing before they die, then that would explain why the OP thinks they have broken legs wings and necks perhaps and as it is a wasting disease, it would also explain why there is very little flesh on them.
I must admit I am also struggling to understand what the OP is trying to convey regarding the nature of the injuries and it is posted under the Emergencies/Diseases/Injuries and Cures rather than Pests and Predators which all makes me think maybe Marek's. The 5 month old birds are at the right age to go down with it too.

Our birds are in a fenced in run
No new birds, all are born here except turkeys which came back in July and are in a different run
The innards look good to me
I just hope this stops soon
I am going to start a dewormer even though I didn't see any
I there a treatment for Mareks ?
rebrascora-I posted here because I tend to think it is a disease because the small meat and no egg production

Sadly there is no recognised treatment for Marek's.

I think what is confusing us is that you are saying that chickens are dying and have broken legs and wings and necks. Broken bones suggest severe trauma usually caused by predator or injury. If your run is secure, then that rules out predators. Having more than one bird injure themselves to such a degree is unlikely. Are you sure they have broken bones or do they just look like they are broken and are you culling them as a result of these perceived injuries or are they dying?

The information you are supplying isn't very easy to follow which is why we are making such varied suggestions as to the cause.

I'm pretty sure that worms will not result in birds with broken legs, so I'm not sure why you think deworming them might help?

Is this problem just affecting young birds or are the older ones also having problems.

There is no recognised treatment for Marek's Disease. It is very widespread and easily contracted... it is caused by a virus that spreads via dander dust. It often first appears as lameness and or wing/neck paralysis and can deteriorate quite quickly or spontaneously get better, although infected birds are carriers for life and may well have secondary attacks which are more likely to prove fatal. Some deaths occur suddenly without any obvious symptoms. Some strains of the virus affect the eyes. Some infected birds develop tumours which can be attached to the organs, muscles or skin as well as inflammation of the nerves which is what causes the lameness. Lame birds will often be found lying on their sides with one leg forward and one back. Some strains are very aggressive and kill a high percentage of the flock, others like the one I have in my flock are thankfully less severe. The virus is very difficult to eradicate from your property once it arrives. Usually young birds between 8 weeks and 12 months are affected.

There are several informative threads about Marek's on this forum if you think that's what it is and need to know more.

Good luck

Barbara

rebascor- we are not culling them if they look like they have an injury, they are fine one day and dead the next, the chickens are of varied ages form 5 months to 2 years old
As far as worming I a just trying to do whatever I can, the lack of meat is what I am confused about, the guts look fie
How would the birds contract Mareks if all the birds were born here? If I moved the chicken runs to a different part of the property would that help if I bought new birds?
Luckily we haven't lost any the last 2 days.