In 1896, George Keartland of the Calvert Expedition to the Great Sandy Desert of Western Australia, observed a yellow budgerigar flying wild in a flock on three occasions.
The river was named by the explorer Frank Hann in 1896 after the surveyor William Frederick Rudall whom he met in the area while Hann was prospecting and Rudall was searching for men missing from the Calvert Expedition.
Robert Calvert | Pancho Villa Expedition | Northern Expedition | Lewis and Clark Expedition | French Antarctic Expedition | Vancouver Expedition | Expedition Robinson | Charles Calvert, 5th Baron Baltimore | Calvert Vaux | Benedict Calvert, 4th Baron Baltimore | Northern Expedition (1926–1927) | Imperial Trans-Antarctic Expedition | Belgian Antarctic Expedition | Terra Nova Expedition | Ford Expedition | punitive expedition | Frederick Calvert, 6th Baron Baltimore | Challenger expedition | Calvert County, Maryland | Charles Calvert, 3rd Baron Baltimore | Calvert Expedition | Blandowski Expedition | Benedict Leonard Calvert | Australasian Antarctic Expedition | Transglobe Expedition | Texas Santa Fe Expedition | Swedish Antarctic Expedition | Narrative of the Expedition of an American Squadron to the China Seas and Japan | Mier Expedition | Great Northern Expedition |