This could be a situation of if you cut it they will come. 
If the other fields in the area are being hunted then you could create a refuge type environment by letting it rest till the end of the month. The downside is that the food could be gone or other food sources could come available. If it's possible you could talk to the farmer about planting winter wheat, as they have once again changed the laws on top sowing, check with the local game wardens or extension agents concerning what is legal in your area.
If the other fields in the area are being hunted then you could create a refuge type environment by letting it rest till the end of the month. The downside is that the food could be gone or other food sources could come available. If it's possible you could talk to the farmer about planting winter wheat, as they have once again changed the laws on top sowing, check with the local game wardens or extension agents concerning what is legal in your area.