Another name for cropper is pouter and a lot of these birds have been bred together to create the different country's preference. The Aix-La-Chapelle Band Cropper has a crest and clean legs with a white bib around it's throat. The Starwitzer Pouter has a shell crest across the top of the head really from ear to ear. The Thuringian pouter has a white head with a crest across the back of its head