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 / Weaver bird nest (Ploceus sp.) detail from Africa in collection at Uebersee-Museum, Bremen, Germany.

Ingo Arndt / Fan Coral (Echinogorgia sp) from Indo-Pacific, in collection at Senckenberg Museum, Frankfurt, Germany.

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

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

Ingo Arndt / Harvest Mouse (Micromys minutus) nest, 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.