I would like to share my very simple methods of treating the "chalky leg". Any hen owner can get them, he only needs to have the desire to treat his hens.
The ill bird's legs have to be oiled by warmed up sunflower-seed oil. It is desirable to do this procedure before hens go to sleep. In seven or ten days keratinized bumps fall off.

I also tried another method. I added a tablespoonful of solid oil to 100-150 grams of sun-flower oil, stirred it up until it turned into homogeneous mass, warmed it up.

I put the ill bird's legs into the warm solution one after another for several days. I did this procedure for several days running. It turned out to be that this method is even more effective than the first one is.