Depends a bit on the material it's built from (old white oak rough-sawn lumber *eats* all but the smallest nails w/o pilot holes). But, if it's wood? You can roll just a bit of it around the back of a small strip of wood, and drive a few nails (be sure there's no electrical wires behind what...
Connected the dots (same girl w/ the new eggs ~'-)
You're doin' fine, and have many irons in the fire ... spare minutes are in high demand, and short supply, for such a busy Little Miss ~'-)
The best way to fix fences depends on your resources, which raises three questions for you to ask...
If there is a strong odor of ammonia, that might be a possibility ... I still suspect infection, possibly from the ditchline. Even if it's not currently an infection, the irritations make excellent entry points for bacteria and fungii. At minimum, I'd wash and treat their feet as if they were...
I'm wonderin' if it's not some form of fungal or bacterial infection, brought about by all the wet conditions (or, possibly, directly from the ditch )-;~
Here a shortened list, in the following format:
Symptom... Possible Cause
Rough, scaly... Fowl pox; scaly leg mite
Bowed, weak...