The red forest duiker, or natal duiker (Cephalophus natalensis), is a species of small antelope widespread along the east coast of Africa from Tanzania to South Africa. It has a chestnut red color and both males and females have tiny horns and a tuft of hair on top of their heads. Males grow horns twice the length of females, and female horns are often hidden in the tuft of hair and not visible. The neck turns a darker bluish grey with age. Red forest duikers only stand up to 40 cm (16 in) at the shoulder and can weigh in at 15 kg (33 lb).
Red forest duikers are often found in forested habitat and thickets where it has sufficient cover and blends in well with the forest floor. It feeds on debris fallen from trees, such as foliage, fruits and flowers. As all duiker species, it is normally quite shy and will dive into hiding when threatened (duiker = diver in Afrikaans). Activity peaks in the morning and evening, but it can be active throughout the day. In disturbed areas they can be nocturnal. In areas where red duikers are plentiful they are often easy to spot when rummaging around on open forest floors and are less shy than its more numerous and larger relative the common duiker.
Here is a video of a male red forest duiker having a drink at a water hole in Tembe Elephant Park.
Red forest duikers are generally solitary animals, but pairs consisting of a male and a female do sometimes occur. Red forest duikers have home ranges but are rarely aggressive towards each other. They use their preorbital glands situated as slits on either side of the face to mark areas within their range, and they will rub the glands together when greeting another individual. In areas where resources are abundant, larger groups of red forest duiker can be seen together. These groups are not necessarily social, but just a congregations of individuals sharing in the abundance. Red forest duikers might occasionally fight but it is not common. When they do, they will use their sharp horns which can inflict serious damage. Red forest duiker females give birth to a single calf after a gestation period of around 210 days.
Red forest duiker is common throughout its range and are found in large numbers in many protected areas. It is under threat from hunting and trapping for bushmeat, and is a particularly popular target in Tanzanian forests. Red forest duiker is fond of coastal forests, mountain forests and dense thickets, and it is believed that some tree species are essential for red duiker presence. Because of this, forestry, agriculture and settlement has reduced the range of red duiker, and in areas south of Durban, South Africa, it is now gone due to these threats. It still occurs in such high numbers within its range that it is for now listed as least concern on the IUCN Red List.