Overview
Pel’s Flying Squirrel (Anomalurus pelii) is an extraordinary, nocturnal gliding rodent native to the dense, old-growth rainforests of West Africa’s Upper Guinea forest ecosystem. Ranking as the largest of all scaly-tailed squirrels, this spectacular arboreal mammal is instantly recognized by its striking, high-contrast pelage: jet-black dorsal fur bordered by pure white margins and a snowy-white underbelly. Gliding silently through the nocturnal forest canopy on expansive skin membranes, it represents an ancient, distinct evolutionary lineage completely separate from typical northern flying squirrels.
Biology and Physical Characteristics
The gliding architecture of Anomalurus pelii incorporates fascinating morphological specializations. Its gliding membrane (patagium) extends from the wrists along the flanks to the ankles; unlike true flying squirrels that support their patagium with a wrist cartilage rod, scaly-tailed squirrels support the leading edge with a specialized cartilaginous strut originating directly from the elbow. The underside of its tail base features two rows of overlapping, sharply pointed, horny scales that provide crucial friction traction when landing on slick tree trunks, preventing backwards slips while climbing. Its thick, silky fur is starkly bicolored, featuring a glossy black mantle edged with pure white borders along the patagial fringes and tail.
Behavior and Ecology
Pel’s flying squirrels are strictly nocturnal and intensely secretive canopy dwellers, spending daytime hours roosting in high, hollow trunks of giant emergent trees, often sharing cavities in small colonies of six to eight individuals. At nightfall, they launch from high branches into dramatic horizontal glides that can span over 150 to 200 feet (45–60 m) between canopy giants. Using subtle limb adjustments to steer gracefully around jungle vines, they land with an audible slap against vertical tree trunks, immediately using their caudal scales to anchor their grip. They forage primarily on nutritious tree bark, sap exudates, wild figs, and oil palm nuts.
Conservation and Human Impact
The species is currently classified as Least Concern on the IUCN Red List due to its presence across multiple protected reserves. However, populations face significant long-term pressure from pervasive rainforest deforestation, commercial logging of large hollow-bearing emergent trees, and habitat fragmentation for cocoa and rubber agriculture across Ghana and Côte d’Ivoire. Preserving intact primary rainforest sanctuaries such as Kakum National Park and Taï National Park is vital to safeguarding their ancient canopy nesting grounds.
Interesting Factoid
Unlike other flying squirrels whose gliding wings are supported by a cartilage rod in the wrist, Pel’s Flying Squirrel has a specialized wing strut that extends from its elbow, allowing it to glide over 200 feet between jungle treetops.
Last updated: October 2026