Hi, 
A great & easy mix to establish called the Good Guard Mix availableat David Brights ltd is really effective at holding & attracting game, its economic by way of it being good for two yrs.Mixed cereals kales & flowers pull pheasants & partridges in from miles, & finds them somthing to do . 
  
Put it round your release woods so that poults can take advantage of the cover as they get out insect rich flowers & cereals, keeps them busy followed by the dwarf sorghum then kale, a worthy driving cover that auto regenerates the following year . 
Sow june ,Cover July August