The swelling under the throat is called the crop, or first stomach. It is largely developed in some of the granivorous or grain-eating birds.
Hazlitt Alva Cuppy PH.D., Editor Beauties and Wonders of Land and Sea (Springfield, OH: Mast, Crowell & Kirkpatrick, 1895)
992×2400, 417.7 KiB
423×1024, 66.8 KiB
264×640, 34.9 KiB
132×320, 11.9 KiB