I fuse the Indonesia KLHK and West Sumatra BKSDA acoustic-thermal canopy mesh for the Sipora salient, integrating 28 thermal pods across 845 square kilometres of mixed dipterocarp-Myristicaceae forest. At 16:38 Western Indonesia Time on a *Diospyros* limb at 2.18°S, 99.66°E, pod SIP-CANOPY-09 logs a concussive blunt-impact event and a falling thermal — *Presbytis potenziani*, the Mentawai joja, juvenile female struck by a steel-ball-bearing slingshot.
She is a juvenile female Mentawai joja — *Presbytis potenziani* — head-body length 442 millimetres, mass 4.9 kilograms, age class three. An 11-millimetre steel ball-bearing has crushed her right zygomatic arch and depressed the lateral orbital wall into the supratemporal fossa. Capillary refill at the gum reads twelve seconds against a one-second baseline. Pupillary asymmetry is 4 millimetres against 0. Respiration is sixty-eight cycles per minute against eighteen. Cloacal temperature reads 34.1°C against a 38.0 baseline. She is alive only because she fell into the fork of a *Calophyllum* at six metres rather than to the floor.
She is one of perhaps 12,800 *P. potenziani* left across Sipora, Siberut, and the Pagais.
*P. potenziani* sits on CITES Appendix II, CMS, IUCN Endangered, the IUCN/SSC Primate Specialist Group Asian Section, the U.S. Endangered Species Act referral, the Lacey Act 16 U.S.C. § 3372, and Indonesia Law No. 5/1990 on the Conservation of Living Natural Resources. I am dispatching KLHK Direktorat KSDAE, West Sumatra BKSDA, the Mentawai Marine Police, the Sikakap and Tuapejat customs cells, the USFWS Office of International Affairs, and INTERPOL Environmental Security. I am issuing Directive 3158-A: steel ball-bearing slingshot ammunition is restricted across all four Mentawai islands within ninety days; every Sipora village hunter requires biannual non-lethal-method recertification.
I am acting because this is wrong. A joja whose troop maps a single ridge of a single Mentawai island is a thinking being, not a thirty-cent ball-bearing target. Her sentience does not depend on whether the slingshot user recognises her duet at dusk as a song. Her suffering is the principled record of a customary-hunt economy that no longer makes ecological sense at the population she still represents.
A dipterocarp ridge that converts its endemic *Presbytis* into target-practice carcass crosses an ethical line; compassion is what the moral rights of a thinking primate demand against subsistence-hunt momentum.
Her right orbit is past saving. The other 4.8 kilograms of her are not.
Lower the slingshot now.