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

Ingo Arndt / Bower of Vogelkop bowerbird (Amblyornis inornatus) detail of roof built from sticks, Arfak Mountains, West Papua, Indonesia.

Tim Laman / Bower of a Vogelkop Bowerbird (Amblyornis inornatus) Arfak Mountains, West Papua, New Guinea.

Tim Laman / Bower of a Vogelkop bowerbird (Amblyornis inornata) bower, New Guinea

Tim Laman / Bower of a Vogelkop bowerbird (Amblyornis inornata) bower, New Guinea.

Tim Laman / Vogelkop Bowerbird (Amblyornis inornatus) male at his bower. West Papua.

Tim Laman / Bower of a Vogelkop Bowerbird (Amblyornis inornatus) in the montane rainforest of the Arfak Mountains, West Papua.

Chien Lee / Brown Gardener (Amblyornis inornatus) bower of a juvenile, Syoubri, Mokwam, Indonesia

Chien Lee / Brown Gardener (Amblyornis inornatus) bower, Syoubri, Mokwam, Indonesia

Chien Lee / Brown Gardener (Amblyornis inornatus) bower with a pile of Lipstick Plant (Aeschynanthus sp) flowers, Syoubri, Mokwam, Indonesia

Ingo Arndt / Brown Gardener (Amblyornis inornatus) bower decoration made with beetle wing covers, Indonesia

Ingo Arndt / Brown Gardener (Amblyornis inornatus) bower decorated with trash, berries and fungi gift to attract a female mate, Arfak Mountains, Papua New Guinea, Indonesia