CROSS RIVER GORILLA
Gorilla gorilla diehli
DESCRIPTION
Cross River Gorilla (Gorilla gorilla diehli) is a critically endangered subspecies of the western gorilla, characterized by its smaller size and distinct facial features compared to other gorilla subspecies. They have a robust build with dark fur, and their faces often display a more pronounced brow ridge. These gorillas are primarily found in the dense forests of the Cross River region, exhibiting a shy and elusive behavior, often avoiding human contact.
FUN FACTS
- Cross River Gorillas are the most endangered of all gorilla subspecies, with their population declining due to human activities
- They are also known for their complex social structures and communication methods, which include a variety of vocalizations and body language
- | Unlike other gorillas, Cross River Gorillas have adapted to their mountainous habitat, which influences their foraging behavior and social interactions
- Their elusive nature makes them one of the least studied gorilla subspecies, adding to the challenges of conservation efforts
QUICK INFO
Lifespan35-40 years in the wild, up to 50 in captivity
Average Weight140-220 kg
Average Length1.5-1.8 m
Diet TypeHerbivore
Social Structuregroup — they typically live in small family groups consisting of a dominant male, several females, and their offspring.
Activity PatternDiurnal
Breeding Seasonyear-round
- Habitat
- They inhabit mountainous and hilly tropical forests, often in areas that are difficult for humans to access. This dense forest environment provides them with ample food sources and shelter.
- Biomes
- Tropical Rainforest
- Native Range
- The Cross River Gorilla is native to the border region between Nigeria and Cameroon, specifically in the Cross River National Park and surrounding areas.
- Continent
- Africa
- Countries
- Nigeria, Cameroon
- Diet
- Cross River Gorillas are primarily herbivorous, feeding on a variety of plant materials including leaves, stems, and fruits. They play a crucial role in their ecosystem by aiding in seed dispersal.
- Diet Type
- Herbivore
- Favorite Food
- leaves, fruits, stems
- Social Structure
- group — they typically live in small family groups consisting of a dominant male, several females, and their offspring.
- Activity Pattern
- Diurnal
- Group Size
- 5-10
- Territorial
- 1
140-220 kg
Weight
1.5-1.8 m
Length
1.5 m at shoulder
Height (Shoulder)
- Coloration
- dark brown to black fur with some lighter patches on the face and chest
- Sexual Dimorphism
- males are generally larger and more robust than females
- Lifespan
- 35-40 years in the wild, up to 50 in captivity
- Gestation Period
- about 8.5 months
- Offspring per Birth
- 1
- Sexual Maturity
- 6-8 years
- Breeding Season
- year-round
CR
Critically Endangered
IUCN Red List Status
- Population Status
- The population of Cross River Gorillas is critically low, with estimates suggesting fewer than 300 individuals remain in the wild.
- Wild Population Estimate
- 200-300
- Population Trend
- Decreasing
- Endangered
- 1
- Threats
- Main threats include habitat loss due to logging and agricultural expansion, as well as poaching. The fragmentation of their habitat has also led to increased human-wildlife conflict.
- Conservation Program
- Various conservation programs are in place, including habitat protection and anti-poaching initiatives, but challenges remain significant.
- Predators
- Humans are the primary threat, but young gorillas may also be vulnerable to large carnivores such as leopards.
- Defense Mechanisms
- They rely on their size and strength for defense, and will often use vocalizations to warn off potential threats.
- Found in Zoos
- Rare