Photos were released for the first time in years showing a group of rare gorillas in the mountains of southern Nigeria, according to environmentalists.
Only 300 Cross River gorillas are known to live in the wild, making it the most endangered subspecies.
But the Wildlife Conservation Society (WCS) says the sightings suggest that endangered animals are actually breeding.
A number of baby gorillas are visible in photos taken earlier this year.
WCS in Nigeria, an international non-governmental organization, said the photos were captured by photo traps in the Mbe mountains.
“Beware of humans”
Cross River gorillas are the rarest great apes in the world, according to the World Wildlife Fund (WWF).
They are naturally wary of humans and are subtly distinguished from other species – such as small heads, longer arms and lighter colored hair.
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Primates were known to live in certain mountainous areas of Nigeria and neighboring Cameroon, but are rarely seen.
WCS says it is working closely with a community organization, the Conservation Association of the Mbe Mountains, as well as with authorities in Nigeria’s Cross River State to protect primates.