In September we conducted fieldwork on either side of the NT and WA border to sample long-tailed finches in the area where the eastern and western forms of the Z chromosome meet in the wild (see recent paper by Hooper et al (2018). The fieldwork team comprised Daniel Hooper and Emma Grieg (both from Cornell University), Kyle Kostrzewa, and Callum McDiarmid and Simon Griffith (Macquarie). The trip was successful and we had two weeks of camping, driving (a lot) and finding water holes and sampling birds in the area from Keep Rive in the east, to Home Valley station in the West.