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    • russian flying squirrel
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Mixed wet woodland including Aspen (Populus tremula) and Downy birch (Betula pubescens). Inhabited by rare surviving Siberian flying squirrel (Pteromys volans) population. Near Lisaku, Estonia. April...
01613890
Nick Upton / Mixed wet woodland including Aspen (Populus tremula) and Downy birch (Betula pubescens). Inhabited by rare surviving Siberian flying squirrel (Pteromys volans) population. Near Lisaku, Estonia. April...
Lisaku Park Forest from above, a mix of mature Fir (Abies sp) trees, Birch (Betula sp) and Eurasian aspen (Populus tremula). Forest host to Siberian flying squirrel (Pteromys volans). Estonia, April 2...
01613887
Nick Upton / Lisaku Park Forest from above, a mix of mature Fir (Abies sp) trees, Birch (Betula sp) and Eurasian aspen (Populus tremula). Forest host to Siberian flying squirrel (Pteromys volans). Estonia, April 2...
Siberian flying squirrel (Pteromys volans) caught in emergence trap over nest hole entrance in Aspen (Populus tremula) tree. Muraka Forest Reserve, near Lisaku, Estonia. April.
01613928
Nick Upton / Siberian flying squirrel (Pteromys volans) caught in emergence trap over nest hole entrance in Aspen (Populus tremula) tree. Muraka Forest Reserve, near Lisaku, Estonia. April.
Siberian flying squirrel (Pteromys volans) droppings. Found below an old deciduous tree with nest hole. Muraka Forest Reserve, near Lisaku, Estonia. April.
01613922
Nick Upton / Siberian flying squirrel (Pteromys volans) droppings. Found below an old deciduous tree with nest hole. Muraka Forest Reserve, near Lisaku, Estonia. April.
Laptop screen showing trailcam footage of Siberian flying squirrel (Pteromys volans) returning to nest hole in Aspen (Populus tremula) tree. Near Lisaku, Estonia. April 2018.
01613921
Nick Upton / Laptop screen showing trailcam footage of Siberian flying squirrel (Pteromys volans) returning to nest hole in Aspen (Populus tremula) tree. Near Lisaku, Estonia. April 2018.
Felled Aspen (Populus tremula) trees with tit nests in hollows. Treeholes suitable for Siberan flying squirrel (Pteromys volans). Near Lisaku, Estonia. April 2018.
01613917
Nick Upton / Felled Aspen (Populus tremula) trees with tit nests in hollows. Treeholes suitable for Siberan flying squirrel (Pteromys volans). Near Lisaku, Estonia. April 2018.
Downy birch (Betula pubescens) trees in mixed woodland, the tree on the left houses a Siberian flying squirrel (Pteromys volans) nest hole. Near Lisaku, Estonia. April.
01613916
Nick Upton / Downy birch (Betula pubescens) trees in mixed woodland, the tree on the left houses a Siberian flying squirrel (Pteromys volans) nest hole. Near Lisaku, Estonia. April.
Researcher radio tracking Siberian flying squirrel (Pteromys volans) in mature mixed forest. Muraka Forest Reseve, near Lisaku, Estonia. April 2018. Model released.
01613908
Nick Upton / Researcher radio tracking Siberian flying squirrel (Pteromys volans) in mature mixed forest. Muraka Forest Reseve, near Lisaku, Estonia. April 2018. Model released.
Researchers carrying equipment prior to fitting nest box for Siberian flying squirrel (Pteromys volans). Mature mixed forest, Estonia. April 2018. Model released.
01613900
Nick Upton / Researchers carrying equipment prior to fitting nest box for Siberian flying squirrel (Pteromys volans). Mature mixed forest, Estonia. April 2018. Model released.
Researchers carrying ladder and nest boxes for Siberian flying squirrel (Pteromys volans). Mature mixed forest, Estonia. April 2018. Model released.
01613899
Nick Upton / Researchers carrying ladder and nest boxes for Siberian flying squirrel (Pteromys volans). Mature mixed forest, Estonia. April 2018. Model released.
Researchers fitting Siberian flying squirrel (Pteromys volans) nest box to tree. Mature mixed forest, Estonia. April 2018. Model released.
01613898
Nick Upton / Researchers fitting Siberian flying squirrel (Pteromys volans) nest box to tree. Mature mixed forest, Estonia. April 2018. Model released.
Siberian flying squirrel (Pteromys volans) emergence trap over entrance to nest hole in old Aspen tree (Populus tremula). Muraka Forest Reserve, near Lisaku, Estonia. April 2018.
01613897
Nick Upton / Siberian flying squirrel (Pteromys volans) emergence trap over entrance to nest hole in old Aspen tree (Populus tremula). Muraka Forest Reserve, near Lisaku, Estonia. April 2018.