Those game cams are inexpensive and simple to use. They download right into your computer to view or you can get one that wi-fi's directly to your computer.
You are facing a very complex problem, much more so than your fox predators. Having been through this with several hens over the last six years, I can tell you that if you can identify the culprit(s) and then interrupt the behavior for several months, you may be able to stop it.
There are several ways to interrupt the behavior. Peepers is one. Separating the victim from the culprit is another. You can also install a saddle/apron on the victim which discourages further picking and allows the feathers to grow back.
It also sounds like confinement in a too small run could be part of the problem. Think about enlarging the space the chickens are inhabiting during the day, and maybe install an automatic coop door so the chickens can get out into the run earlier, if you have a problem letting them out before sun-up.
Install more perches in your run so there are more escapes. Look for a scratch block at your feed store. This is one of the best things you can give to a flock with a feather picking problem. It keeps them busy for hours, and it gives them something to do beside picking feathers.
You are facing a very complex problem, much more so than your fox predators. Having been through this with several hens over the last six years, I can tell you that if you can identify the culprit(s) and then interrupt the behavior for several months, you may be able to stop it.
There are several ways to interrupt the behavior. Peepers is one. Separating the victim from the culprit is another. You can also install a saddle/apron on the victim which discourages further picking and allows the feathers to grow back.
It also sounds like confinement in a too small run could be part of the problem. Think about enlarging the space the chickens are inhabiting during the day, and maybe install an automatic coop door so the chickens can get out into the run earlier, if you have a problem letting them out before sun-up.
Install more perches in your run so there are more escapes. Look for a scratch block at your feed store. This is one of the best things you can give to a flock with a feather picking problem. It keeps them busy for hours, and it gives them something to do beside picking feathers.