The mix has a fair amount of chickory in it but it goes pretty rapidly, a couple of seasons ago i put in a late catchcrop which included stubble turnips.
Turned out to be a disaster for the birds as the larger species of deer went mad for it totally decimated the crop, so i agree it works !
Unfortunatley this is a problem for me as far as game cover goes with any food value it just gets destroyed , to such an extent im not bothering this year .
Instead im just putting a rough grass mix with added canary grass and upping the deer cull. DF