The Nilgiri tahr or Nilgiri ibex is a dark yellowish brown animal and are restricted between Nilgiri hills and Ashambu hills of Tamil Nadu and Kerala. Females and young, however, are grey. It can be distinguished from the Himalayan tahr by having a distinct lighter patch on the back of the body which is mostly dark brown in colour. The female Nilgiri tahr possesses black carpal marks that are absent in the Himalayan tahr. They are true browsers and can be found in small groups of six to twelve individuals or more. Breeding takes place between April and August. The gestation period is reported to be 174-201 days. The female is reported to produce two young once at a birth.