The adult Japanese Bantam is one of the most visually striking ornamental chickens in the world, carrying a set of breed characteristics that have been refined over centuries of selective breeding in Japan and, later, throughout Europe and North America. A fully mature bird reaches its adult weight between seven and ten months of age, with roosters typically weighing between 510 and 600 grams and hens between 400 and 510 grams. This diminutive size, combined with the breed's exaggerated physical proportions, creates a bird that appears simultaneously delicate and bold.
The defining feature of the breed is its extraordinarily short legs. The shanks of a well-bred Japanese Bantam are so short that the bird's body nearly touches the ground, and in profile the bird appears to glide rather than walk. This trait is governed by the incomplete dominant creeper gene, which in a single copy produces the desired short-legged phenotype. The legs should be clean, free of feathering, and of a color appropriate to the variety, typically slate blue, yellow, or willow depending on plumage color.
The tail is the breed's second most dramatic feature. In the rooster, the tail is carried high and forward in a sweeping arch, with the main sickle feathers and lesser sickles extending above and often beyond the level of the head. The hen's tail is also carried upright but in a more compact fan shape. This extreme tail angle, combined with the short legs and broad, forward-thrust breast, creates the distinctive silhouette that judges evaluate on the show table. Wings are large relative to body size and are held low, with the tips angling slightly downward and forward.
The head furnishings include a medium-sized single comb with five evenly serrated points in the rooster and a smaller comb in the hen, bright red wattles and earlobes, and large, expressive eyes. Japanese Bantams are recognized in a wide range of color varieties, each with specific plumage pattern requirements defined by the breed standard of the relevant poultry association. Black-Tailed White is the most iconic and widely exhibited variety, but Black, White, Mottled, Grey, Buff Columbian, and numerous others are shown and bred with equal dedication.