Last fall, we had a HUGE infestation of Western Conifer Seed Bugs. In the evening, the southeast facing wall of the garage would be covered with the things. I am hoping the turkeys ate copious amounts of these noisy, pervasive, smelly buggers and are continuing to find and decimate their larvae.
Their primary defense is to spray a bitter, offending smell, though sometimes they can smell pleasantly of apples, bananas or pine sap; however, if handled roughly they will stab with their proboscis, though they are hardly able to cause injury to humans as it is adapted only to suck plant sap and not, as in the assassin bugs, to inject poison.
The western conifer seed bug's consumption of Douglas-fir seeds and seeds of various other species of pine results in a substantial loss of seed crop. Thus, its direct economic impact is a reduction in the quality and viability of conifer seed crops.
I think they also enjoy the grasshoppers and crickets, any other bugs, seeds, vegetation, plus the kitchen waste we put out to "compost" (ahem!).
Summer foods in the Judith Mountains and Longpine Hills consist of insects (primarily grasshoppers), bearberry, snowberry and skunkbrush sumac fruits, grass leaves and stems, and Carex seeds; winter foods are grains, hawthorn and snowberry fruits, and grass leaves, stems and heads (Rose 1956).
I woke up one winter day to a turkey up in an apple tree, knocking down frozen apples so he and his pals could feast. There are a few trees here that will hold onto their fruit right through the winter. It's usually the first thing that the squirrels and robins like to eat when things finally thaw around here. Turkeys are too heavy to get the ones on the end of branches so everyone gets a little spring time pick-me-up. Although they can fly, turkeys are not graceful creature when up in an apple tree.