This blog concerns the Jiwarli language (also spelt Djiwarli, Tjiwarli) which was traditionally spoken along the upper reaches of the Henry River, a tributary of the Ashburton River, in the north-west of Western Australia. The language was unrecorded until 1978 and is now extinct; the last person who learnt to speak Jiwarli as a child, Mr Jack Butler, passed away on 24th April 1986. Before his death Jack Butler worked with Peter Austin to record over 70 texts in a range of genres, including mythology and personal history, a vocabulary of around 1,500 words and grammatical elicitation of morphological paradigms and syntactic constructions. Publications on the language include a bilingual dictionary (Austin 1992), a text collection (Austin 1997), and articles on morpho-syntax (Austin and Bresnan 1996, Austin 1995, 1998, 2000, 2001). A grammar of Jiwarli is being prepared for publication.