I have had good luck with popcorn. I usually cook up a batch, eat what I can and some of the stuff is not fully cooked, might damage my teeth, so I dump it outside for the usual bird feast. But it does bring in the rif-raf birds too. I have seen opposums around at night, they might be eating some of the popcorn as well, although I don't hunt the larger animals with pellet guns.
The white puffs of popcorn show up well on green grass, too bad they don't come with blaze orange colors!
I had a friend who lived in the country and he set up a wooden platform several feet off the ground to hold grain outside of his back screen door, a big bird feeder. The birds loved to flock there for the free grain, he would pick off the bad rif-raf birds with his pellet rifle and leave the others alone. The local hawks also saw the buffet offerings, was neat to see those birds of prey in action when they swept in and grabbed their feathery meal for the day.