f86v3: A bird and a Mountain.

[Searcher]

I personally do not believe in a religious background.
Since I am in a book of healing I think this is about nutrition. The struggle for grain. The rook where many things are already eating away at the sowing, and also before the harvest.
The corn stalks of the bird make me slit them.

It must not be religious in general, nevertheless religious, sacred signs presented almost everywhere in those times, as religion influenced all  aspects of the medieval life.