Ingo Arndt / Bower of Vogelkop Bowerbird (Amblyornis inornatus) decorated with various types of leafs, beetle wing covers, black and brown fungi, red flowers and blue berries, Arfak Mountains, West Papua, Indonesi...

Ingo Arndt / Cathedral Termite mount, Litchfield National Park, Northern Territory, Australia

Ingo Arndt / Great Bowerbird (Chlamydera nuchalis) male at courting bower, Litchfield National Park, Australia.

Ingo Arndt / Reed Warbler (Acrocephalus scirpaceus) nest in Senckenberg Natural Hystory Collection Dresden, Germany.

Ingo Arndt / Garden Spider (Araneus diadematus) web with dew drops, at sunrise, Germany, August.

Ingo Arndt / Magnetic Termite (Amitermes meridionalis) mounds in grassland, Litchfield National Park, Northern Territory, Australia.

Ingo Arndt / Common Moorhen (Gallinula chloropus) nest from Germany in collection at Uebersee-Museum, Bremen, Germany.

Ingo Arndt / Bower of Vogelkop bowerbird (Amblyornis inornatus) front entrance of bower decorated with red fruit and acorns, Arfak Mountains, West Papua, Indonesia.

Ingo Arndt / Male Vogelkop Bowerbird (Amblyornis inornatus) constructing bower roof. Arfak Mountains, West Papua, Indonesia.

Ingo Arndt / European Red Wood Ant (Formica polyctena) nests in pine forest, Hessen, Germany, July.

Ingo Arndt / Green tree ant (Oecophylla smaragdina) group on entrance from nest, built from woven leaves, Northern Territory, Kakadu National Park, Australia.

Ingo Arndt / Eurasian beaver (Castor fiber albicus) tree damage, Spessart, Germany, November.