This is an emu. It is similar, but smaller in size, to the ostrich, another animal found on Illinois farms. This is a bale of hay. Hay is usually cut grass or plants such as clover or alfalfa gathered into bales or bundles. Farmers raise chickens for meat and eggs.
Eggs come from female chickens, called hens.
Many years ago, some kinds of horses were used to pull wagons or plow fields. Now most people keep horses for the fun of riding them. Other people race horses as a sport. This is an ostrich. The ostrich is the largest existing bird.