2 Sets of Mountain Gorilla Twins Beat the Odds Amid Eastern Congo’s Ongoing Instability
"From our nearly 60-year mountain gorilla database... we know that they occur in less than one percent of births."
Something extraordinary is unfolding in the misty volcanic highlands of eastern Congo.
Within just three months, two sets of twins have been born among the mountain gorilla population of Virunga National Park — an occurrence so rare it has left researchers and conservationists marveling at what it signals for one of the world’s most iconic endangered species.
Twin births in mountain gorillas occur in less than 1% of all births. To see two sets arrive in such rapid succession is virtually unprecedented.
The first set of twins this year came in January 2026, when adult female Mafuko of the Bageni family gave birth to twin males. Now approximately 11 weeks old, the pair is reported to be thriving.
The most recent pair was born in early 2026 in the park’s Mikeno sector. Believed to be one female and one male, the infants are approximately two weeks old and belong to the Baraka family, which is now made up of 19 gorillas.
Their arrival marks the ninth gorilla birth recorded in Virunga in 2026—a striking figure given that eight mountain gorilla births were recorded across all of 2025, according to CBS News.
“The arrival of twins among gorillas is a special occasion given their rarity,” Tara Stoinski, CEO and chief scientific officer of the Dian Fossey Gorilla Fund, told CBS News. “From our nearly 60-year mountain gorilla database… we know that they occur in less than one percent of births.”
Gorilla twins have support from within the group
One of the more remarkable behavioral details to emerge from the Bageni family involves a young blackback male — sexually mature but not yet a silverback—who has been observed staying close to Mafuko and her twin infants.
Field teams have noted his protective and supportive behavior toward the mother and newborns.
This kind of social support matters. Twin births place heavy physical demands on the mother. She must carry two infants, making movement harder, especially in the early weeks. Nursing two also requires significantly more milk production, which is energetically very costly.
Strong support from within the group can improve the chances of survival for both mother and young.
Biologically, twins most likely result from hyper-ovulation, where two or more eggs are released and fertilized at the same time. Observations suggest twins may be more likely when the mother is in particularly good physical condition, though no direct cause-and-effect relationship has been established.
Why gorilla twins are important for the population
Mountain gorillas (Gorilla beringei beringei) are a subspecies of the eastern gorilla. They live in close-knit family groups led by a dominant silverback male, alongside several females and their offspring.
The global wild population is estimated at approximately 1,050–1,063 individuals, with around 350 gorillas recorded in Virunga alone as of 2021.
Those numbers represent a hard-won trajectory. Between 2010 and 2016, the population increased by approximately 3% per year, according to WWF’s 2024 Living Planet Report.
“The mountain gorillas were actually faring extraordinarily well,” Virunga director Emmanuel de Merode told Mongabay. “The numbers increased because of an enormous effort on the part of Congo’s rangers.”
Gorilla twins are an ‘extraordinary event’ and ‘vital indicator’
Virunga National Park, located in the eastern Democratic Republic of Congo, is Africa’s oldest national park, founded in 1925, and a UNESCO World Heritage Site.
The Virunga mountains host one of only two known wild populations of mountain gorillas, and the park’s Mikeno sector features a diverse mix of vegetation types and altitude zones that may support favorable ecological conditions for the species.
Jacques Katutu, Head of Gorilla Monitoring at Virunga National Park, framed the twin births as more than a biological curiosity.
“Two instances of twin births within 3 months is an extraordinary event and provides another vital indicator that dedicated conservation efforts, which have continued despite the current instability in eastern Congo, continue to support the growth of the endangered mountain gorilla population within Virunga National Park,” he said.
Field teams continue to closely monitor both sets of twins during this critical early period. For a species whose total wild population could fit inside a single sports arena, every birth counts—and two sets of twins count twice over.
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