![](https://www.mammalwatching.com/wp-content/uploads/2016/07/Eq-Guinea.jpg)
Bioko Island
I spent a week on Bioko Island in January 2023.
The Caldera (Reserva Científica de la Caldera de San Carlos)
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Western Tree Hyrax (Dendrohyrax dorsalis)
Four nights in Moraka Camp inside the reserve produced Drill, Pennant’s Red Colobus, Red-eared and Crowned Monkeys, Ogilby’s Duiker and four species of squirrel: African Giant, Red-legged Sun Squirrel, Green Squirrel and Red-cheeked Rope Squirrel.
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Lord Derby’s Anomalure (Anomalurs derbianus)
After dark we saw Lord Derby’s and Beecroft’s Anomaures, Western Tree Hyraxes, Forest Giant Pouched Rat, Allen’s Hylomyscus and Cameroon Soft-furred Mouse.
Malabo
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African Straw-coloured Fruit-bats (Eidolon helvum)
There were at least two fruit bat camps in the city in 2023.
Moraka
![](https://www.mammalwatching.com/wp-content/uploads/2023/02/20230118-Angolan-Fruit-Bat-Lissonycteris-angolensis-762x1024.jpg)
Angolan Fruit Bat (Myonycteris angolensis)
2 nights in 2023 in the mountain village of Moraka produced Angolan Fruit Bats, several Northern Needle-clawed Galagos and a Red-legged Sun Squirrel.
Pico Basilé National Park
![](https://www.mammalwatching.com/wp-content/uploads/2023/02/20230120-Preusss-Monkey-Allochrocebus-preussi-1-Edit.jpg)
Preuss’s Monkey (Allochrocebus preussi)
During my first morning here in 2023 – walking a trail – I saw nothing. Returning to walk along the road produced several Preuss’s Guenons, a Bioko Hybomys and a Bioko Forest Shrew.
Community Reports
Bioko Island, 2023: Jon Hall, 8 days & 23 species including Pennant’s Red Colobus, Preuss’s Monkey, Drill and Bioko Hybomys. (and here is an 11 minute video from Angiolo Laviziano documenting the trip).
Bioko Island, 2019: Justin Brown, 9 days & 11 species including Drill, Red-eared Monkey, Black Colobus, Bioko Allen’s Galago and Brush-tailed Porcupine.
Bioko Island, 2017: Curtis Hart, two prolonged visits with species including Drill, Cameroon Scaly-tail, Black Colobus, African Lingsang and Tree Pangolin.
Bioko Island, 2014-15: Curtis Hart’s notes of a 5 month stay on the island. Many exciting mammals including Drill, Black Colobus, Target Rat, Tree Pangolin, Cameroon Scaly-tail and African Linsang! (This report has been updated above).
Bioko Island: 96-2000: Bob Berghaier’s report of mammals seen during 4 research trips to this interesting area between 1996 and 2000. He recorded 26 species including Drill, Ogilby’s Duiker and 4 species of Guenon’s. He also provided some notes on the natural history of the island and travel advice.
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