You probably don't know what this is. Well this is a lot of gizzards from birds. Do humans have a gizzard? No we do not have a gizzard. Birds have a gizzard because they don't have teeth. The gizzard is like their teeth because the food gets grind into little pieces. The gizzard is part of their stomach. In the gizzard there is sand and small stones and it's the second port of the stomach.
It can take up to 36 hours from the time an Ostrich eats to when it has been fully digested. They have three stomachs that the food goes through before it enters the intestines and can be used for nutrition and energy. An ostrich eats an average of 8 pounds of food per day compared to an adult who eats an average of 5.4 pounds per day.
An ostrich is born weighing an average of 3 pounds compared to a human baby who weighs an average of 7.5 pounds. A full grown ostrich can weigh anywhere from 220 to 350 pounds , where humans average 130-190 pounds. That shows that even though they start out smaller than humans they quickly grow to much bigger. By the age of one year old they typically weigh around 100 pounds.
What websites did I use. Well I got some from the text book, reference.com, prezi.com, and crop(anatomy)