Buckwheatis that buckwheat? hard to tell from picture.
Sounds like it is alfalfa. A great food plot for deer, it flowers, so it would be a draw for insects. I would assume they can't cut it until after the nesting season, so good brood rearing, until it is cut...not much understory so the chicks could navigate in it easily. The more diversity the better.
That last cut should be the 1st cut date. There would be a lot of young chicks July 15th. In the regular CRP programs, such practices are not to be done from May 15th to Aug 1st in Iowa.
Just saw your post, and it got me curious. I stick to the point that it's buckwheat, but a bit dried out.