The specimen below was part of a collection presented to the Natural History Museum (branch of the British Museum), by the then director, Richard Bowdler Sharpe. It is not recorded how he came by the collection or who actually collected the specimens, when they were collected, or exactly where. It is unlikely that ground parrots were present in the Swan River area by the beginning of the 1900s.
When John Gilbert first arrived in 1839, he mentioned in a letter that there were several collectors of bird specimens when he arrived, all hoping to make as much money as possible. (Whittell, H.C. 'A review of the work of John Gilbert in Western Australia', in Emu 1941 pp. 112-129).
This bird specimen along with 18 others, was registered as part of the Natural History Museum collection on 18 June 1888. (Specimen number: 1818.104.22.168). It appears to be an adult female, by the shape of the upper mandible (curved for more than half its length indicates a female) and the colour of the throat feathers - there would be more streaking if it were a young bird.
The three photos below are all COPYRIGHT Natural History Museum.