Eliminators as an order of birds

I am Eliminators, and I eliminate. I am a distinct section of the great order of birds, and may be briefly described as follows:--I have a beak, which is generally hard, and sometimes furnished with teeth. My tongue is soft, and my feet are usually covered with feathers. I feed on grain, seeds, and soft vegetable substances, and I am generally inhabitants of the fields. For the most part I am harmless, and I am never guilty of Eliminating anything but corn.