ocr: DIGESTION ALLA ANIMALS digest, or break down, food into energy-providing nutrients that can be absorbed. To provide the huge amount of energy needed for flight, a bird digests food quickly. Rapid digestion prevents: food from weighing a bird down. DALMATIAN PELICAN'S DIGESTIVE SYSTEM Digestion takes place in a tube known as the alimentary canal. ESOPHAGUS Each cha mber in the canalbas Saliva helps food pass its OWn specificfunction. down the esophagus CROP INTESTINE Coiled tube from which PROVENTRICULUS nutrients are absorbed This stomach chamber into the bloodstream produces chemicals that br ...