Sven Zacek / Brown bear (Ursus arctos) in coniferous forest. Ida-Virumaa, Eastern Estonia. September.
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Nick Upton / Eurasian beaver (Castor fiber) dam made from cut branches, surrounded by wet woodland. Near Lisaku, Ida-Viru County, Estonia. April.
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Nick Upton / Scots Pine tree (Pinus sylvestris) forest on northern shore of Lake Peipsi, near Alajoe, Ida-Viru County, Estonia. April 2018.
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Nick Upton / Wind-blown lake ice piled up near shore, Lake Peipsi, Estonia. April 2018.
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Nick Upton / White stork (Ciconia ciconia) standing on its nest of sticks, Iisaku, Ida-Viru county, Estonia, April.
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Nick Upton / White stork (Ciconia ciconia) in flight against a blue sky, near Iisaku, Ida-Viru county, Estonia, April.
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Sven Zacek / Silhouette of Red squirrel (Sciurus vulgaris) gathering nesting material for winter nest. Ida-Virumaa, Eastern Estonia. November.
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Sven Zacek / Brown bear (Ursus arctos) in coniferous forest. Ida-Virumaa, Eastern Estonia. September.
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Sven Zacek / Pattern of Conifer (Pinaceae) needles on snow, revealed following spring melt. Agusalu Nature Reserve, Ida-Virumaa, Eastern Estonia. April.
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Sven Zacek / Pine (Pinus sp) forest canopy viewed from below. Agusalu Nature Reserve, Ida-Virumaa, Eastern Estonia. April.
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Nick Upton / Felled conifer trees stacked beside forestry track through mixed forest. Near Muraka Forest Reserve, a rare surviving home for Siberian flying squirrel (Pteromys volans). Near Lisaku, Estonia. April 2...
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Nick Upton / Aspen (Populus tremula) with Aspen trunk rot / False tinder conk mushroom (Phellinus tremulae). Trees with rotten cores provide ideal nest holes for the Siberian flying squirrel (Pteromys volans). Mur...
