Deakin University in Waurn Ponds, Australia, "because no one looked at the bowers from a female's perspective". great bowerbirds (Chlamydera nuchalis) build intricate bowers - tunnels built from interlaced twigs.    From Wordnik.com.  [New Scientist - Online News] Reference

The bower of the bowerbird (Chlamydera maculata, GOULD) was seen in the scrub; it is made of dry grass, and its approaches at either end were thickly strewn with snail shells and flint pebbles, which had been collected by the bird with great industry, but for what purpose we could not determine.    From Wordnik.com.  [Journal of an Overland Expedition in Australia : from Moreton Bay to Port Essington, a distance of upwards of 3000 miles, during the years 1844-1845] Reference

Chlamydera maculata, GOULD.    From Wordnik.com.  [Journals of Expeditions of Discovery into Central Australia and Overland from Adelaide to King George's Sound in the Years 1840-1: Sent By the Colonists of South Australia, with the Sanction and Support of the Government: Including an Account of the Manners and Customs of the Aborigines and the State of Their Relations with Europeans — Complete] Reference