Considered by some authors to be a subspecies of Striated Grasswren (Amytornis striatus). References See References. Files: More Information Articles about the Pilbara Grasswren If you would like to read any articles about the Pilbara Grasswren... Show Articles (0) No Pictures of Pilbara Grasswren If Birdpedia has no pictures of Pilbara Grasswren or you would like to see more, then try the following... From BING (1) No Videos of Pilbara Grasswren If Birdpedia has no videos of Pilbara Grasswren or you would like to see more, then try the following.. From BING (0)