A shrike's well developed first stomach-chamber can digest an entire mouse in only three hours!
After being released from food during digestion, nutrients are absorbed and distributed throughout the animal's body. The stomach is separated from the small intestine by the pyloric sphincter.
When a hen lays an egg, the vagina folds over to allow the egg to leave through the cloaca opening without coming into contact with feces or urine.
The ileum, also illustrated in Figure 10 is the last part of the small intestine and here the bile salts and vitamins are absorbed into blood stream. The small intestine is the organ where the digestion of protein, fats, and carbohydrates is completed.
Although ceca are relatively small in HoatzinsEmus, and Ostriches, an expanded foregut Hoatzinsa much longer midgut Emusor a much longer colon Ostriches compensates for this From: Stevens and Hume Crop impaction also can occur when a chicken free-ranges on a pasture of tough, fibrous vegetation or eats long pieces of string.