A STOOL pigeon is a type of pigeon that is five letters long. It is a breed of domesticated pigeon that is used for carrying messages or other items. A CARRIER pigeon is a seven letter breed of pigeon that is used to transport goods or messages over long distances. Homing pigeons are a six letter breed of pigeon that have an innate ability to return to their home from a distant location. CLAY pigeons are a four letter breed of pigeon that are used in the sport of CLAY pigeon shooting. Lastly, pouter pigeons are a six letter breed of pigeon that are known for their large crop and upright posture.