But they are the largest group. Blue duiker also occur in Central, East, and West Africa. In Zambia, they are found in thick dense forests in Central, North-Western, Northern and Eastern Provinces. The majority of species, however, are found in West Africa, only the blue duiker has the widest distribution of all the duiker species. They are small antelope, weighing an average of four kilograms and measuring 35 centimetres at the shoulder.
Females are slightly larger than males, both sexes have horns.
A single lamb is born after a gestation period of six months. Lambs are born throughout the year, with peak periods at certain times to coincide with abundance of food. They inhabit forests with dense bushes, with adequate water and food which comprises mostly fruits and leaves. Their major enemies are African wildcat, carcal, leopard, crowned eagle and python. Man is a major predator, hunting them using spears, snares and pits.