Nigeria Gorillas: World's rarest great ape pictured with babies

• Gorillas in Nigeria: World's rarest great ape pictured with babies

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Only 300 Cross River gorillas are known to live in the wild, making them the most endangered sub-species in the world. 

The Wildlife Conservation Society (WCS) says this sighting raises hopes that the animals at risk of extinction are actually reproducing in large numbers.

A number of infant gorillas are visible in the shots taken earlier this year.

WCS in Nigeria, an international non-governmental organisation, said the pictures were captured by camera traps in the Mbe mountains "in cross rivers.

'Wary of humans'

Cross River gorillas are the world's rarest great ape.

They are naturally wary of humans and have subtle distinctions from other species - such as smaller heads, longer arms and lighter-coloured hair.

The primates were known to live in some mountain's in Nigeria and neighbouring Cameroon but are rarely seen.

The WCS says it is working closely with a community organisation, the Conservation Association of the Mbe Mountains, as well as authorities in Nigeria's Cross River state to protect the primates.