| Conservation status | |
|---|---|
| Country of origin | Japan |
| Traits | |
| Weight |
|
| Colour | black |
| Classification | |
| APA | no |
| EE | yes |
| PCGB | yes: 344 |
| |
The Tōmaru (唐丸) is a Japanese breed of long-crowing chicken. The crow may be sustained for some 25 seconds. It is one of four Japanese long-crowing breeds, the others being the Koeyoshi, the Kurokashiwa and the Tōtenkō.: 344 : 332
The Tōmaru is thought to have originated in China at the time of the Tang dynasty; the kanji character 唐, 'tou', represents that dynasty.
The Tomaru was registered as a Japanese natural monument of Niigata Prefecture in 1939.: 101
The Tōmaru has only one colour, black with a greenish sheen.: 344 The body is broad and compact with a full breast. The tail is held low, but higher than horizontally; although the sickle feathers may be long enough to touch the ground, this is not usually considered a long-tailed breed. The feet and shanks are dark slate-grey. The comb is single. The ears and face are red, sometimes with dark markings; in hens the face may be entirely black.: 344