Do a pigeon have digestive system?

Yes, pigeons have a digestive system. This system is responsible for breaking down food and extracting nutrients from it. The digestive system of a pigeon begins with the mouth, where the pigeon pecks at food and breaks it down with its beak. The food then passes into the esophagus, which carries it to the crop, where it is temporarily stored. From the crop, the food moves to the proventriculus, which secretes gastric juices to begin the process of digestion. The food then passes to the gizzard, a muscular organ that grinds the food into smaller pieces. The gizzard contains small stones that aid in the grinding process. From the gizzard, the food moves to the intestine, where nutrients are absorbed. The intestine is lined with villi, which are small finger-like projections that increase the surface area of the intestine and aid in the absorption of nutrients. The waste products from digestion are eventually expelled from the body through the cloaca.