This groundbreaking study explores the inheritance patterns in pigeons, with a focus on the development of checks and bars and other variations in the black coloration of these birds. The work is a seminal contribution to the field of genetics and a must-read for anyone interested in animal breeding and genetics. This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work is in the "public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.