1. Bates, R. L. & Jackson, J. A. Dictionary of geological terms. Am. Geol. Inst.386 (1984). 2. Willett, S. D., McCoy, S. W., Perron, J. T., Goren, L. & Chen, C. Y. Dynamic reorganization of river basins. Science 343, 1248765 (2014). 3. Bishop, P. Drainage rearrangement by river capture, beheading and diversion. Prog. Phys. Geogr. 19, 449–473 (1995). 4. Vella, P., Neef, G. & Kaewyana, W. River piracy at Kakariki, north-western Wairarapa, New Zealand. J. R. Soc. N.Z. 17, 373–380 (1987). 5. Carter, S. P., Fricker, H. A.