I have some feeders up that are feeding a persimmon flavored, high protein mix. I have seen a coyote eating some of it, when I go to fill my feeders. I have seen him twice, so he is either eating the protein mix or the whole corn I have it mixed with. But as stated, my coons are getting bigger also.
I think a coyote is more of an opportunist, than a straight meat eater. Most of the guys around here say they will eat anything that will stand still long enough, be it vegetable or otherwise.