Use shadecloth in the sunny months and roll it back when it's snow season.
Just tack it down so it doesn't blow away.
Shadecloth is sold at most garden stores.
I like to use a small feeder inside and the main one outside to promote them to go explore. I use extra garbage can lids to cover my...
http://www.hancockseed.com/seed-varieties-241/food-plot-seed-373/food-plot-seed-blends-388/hancock-s-dove-field-seed-mix-50-lb-bag-119.html
Wild Forage for Doves...
they have other food plot mixes that would work well for poultry.
another option is to buy in the bigger quantities 25 and 50...
Giant red-tail hawk killed 5 guineas and two roosters.
Going to try the CDs.
Also heard they don't like crows and i have a few crow decoys I'll post them around.
Also will try the fishing line up high around the area where my chickens and guineas forage.
thanks for the suggestions!