Chickens are not the smartest of animals but they do seem to avoid some stuff I offer them. For example, they steer clear of bell peppers, hot peppers, and bright/furry caterpillars. I throw all sorts of stuff into their pen. Onions, noodles, potatoes, et cet. Today I tossed them an old tomato plant, some little white wildflowers, and some horseradish leaves. I have also been giving them all the leaves I rake up from the yard and they have devoured them too! But are there any wild flowers or plants to absolutely avoid? I have been planning of giving them some mice I hope to catch in a live trap too.