The problem I see with a short field is there isn't much biomass there. So take clover, its not really actively growing at the rate it would be if it was warmer. It's starting to perk up a little bit, but its not growing at a level where its growth is outpacing the deers consumption of it. At some point it will. And I don't have have some super high density either. My most heavily used clover field looks like a putting green right now. I doubt there is anything there over an inch tall.

When it is actively growing its 8 or more inches tall. And the leaves are much larger.

I also moved a feeder to a field, and set up a cell camera on it. From the pic's I have been getting, it looks like the deer are moving away from the brassicas and eating clover and cereal grains. And I expect to see the chicory start to grow soon too.