ocr: DIGESTION Gizzard PROVENTRICULUS BIRD DOES NOT have teeth because they A bird's first A would weigh the bird down. To break stomach chamber up food, birds use a special kind of stomach GIZZARD called a gizzard. The gizzard has muscular, In many mear-eaters, ridged walls that contract, crushing the food the gizzard compacts into small pieces. Many birds (although not the indigestible pelicans) swallow grit that lodges in the parts of into the pellets food gizzard, helping to grind up food. INTESTINE Pulped food passes into the intestine, where it is mixed with digestive juices MUSCULAR STOMACH ...
