Sven Zacek / Ural owl (Strix uralensis) female stretching wings whilst perched in Spruce (Picea sp) tree. Tartumaa, Southern Estonia. May.

Ingo Arndt / Bark beetle (Scolytinae) galleries in dead spruce tree (Picea abies), Bayerischer Wald / Bavarian Forest National Park, Germany., June.

Orsolya Haarberg / Snow covered Norway spruce (Picea abies) trees at the treeline, Stubba Nature Reserve, Laponia, Sweden, February 2013.

Orsolya Haarberg / Snow covered Norway spruce (Picea abies) forest on Mount Harghita Madaras, Carpathian Mountains, Transylvania, Romania, January 2015.

Orsolya Haarberg / Norway spruce (Picea abies) trees covered in snow, Ciuc Mountains, Transylvania, Romania, January 2015.

Erlend Haarberg / Norway spruce trees (Picea abies) covered in snow and frost, at sunrise, Mellan-Stubba, Stubba Nature Reserve, Lapland, Sweden, February 2013.

Charlie Summers / Black Bear (Ursus americanus) sleeping in a Sitka Spruce tree (Picea sitchensis) alongside Anan Creek, Alaska, July.

Sven Zacek / Female Long-eared owl (Asio otus) peeking from behind a spruce tree, Southern Estonia, June.

Sven Zacek / Common cuckoo (Cuculus canorus) perched in Spruce tree top after sunset, Southern Estonia, June.

Erlend Haarberg / Norway spruce (Picea abies) forest covered by packed snow, Riisitunturi National Park, Finland, February 2006

Donald M. Jones / Black Bear (Ursus americanus) yearling cub at base of spruce tree, Alberta, Canada

Sven Zacek / Spruce trees covered in snow (Picea abies) Winter, Estonia