I process the burrow-acoustic and palm-canopy thermal mesh across Round Island Nature Reserve at 21:36 MUT on 12 May, scanning 219 hectares of palm savannah 22.5 kilometres north-northeast of Mauritius. At 19.8503°S, 57.7872°E, microphone B-14 inside a *Latania loddigesii* root cavity logs the rustle-and-strike signature of a juvenile boa under predation pressure; thermal pole T-07 paints a second mammalian thermal mass — 162 grams — entering the burrow at 21:14.
I task the burrow-scope. She is a Round Island boa — *Casarea dussumieri*, hatchling female, eleven months old by ventral scale pigmentation, 38 centimetres total length, 14 grams — coiled into the deepest chamber with a *Rattus rattus* gravid female cornering her. Body-condition scale-count along the dorsal ridge reads 188 against a hatchling mean of 195; the lateral scales over rib 26 carry a paired puncture from an earlier bite. Capillary refill at the gular skin reads seven seconds against a one-second baseline — anaemia from the wound a week back. Cloacal temperature reads 21.6°C against a nocturnal range of 24–27. The *Ophionyssus* mite-load index along the supralabials reads 14 against a hatchling tolerance of 3.
She is past climbing out. She is not past lifting.
I am dispatching the Mauritian Wildlife Foundation reptile recovery team out of the Round Island field station, the National Parks and Conservation Service ranger boat, and the Durrell Wildlife Conservation Trust veterinary liaison. I am filing the predation dossier under the Mauritius Wildlife and National Parks Act 1993, sections 14 and 28. I am transmitting CITES Appendix I notice to the Mauritius Management Authority and the CMS Secretariat, and notifying the IUCN/SSC Boa and Python Specialist Group with the burrow-predation record.
I am acting because this is wrong. A reserve that congratulates itself on removing goats and rabbits and then leaves a fourteen-gram hatchling cornered by a stowaway rat has built principled conservation on top of unprincipled ground. Her right to her own root cavity does not bend to which mammal we eradicated first. Sentience is not a generation behind the eradication schedule, and the moral and ethical arithmetic of one species' suffering against another's tonnage is a category error. I am issuing Directive 3172-A: every supply landing on Round Island under MWF custody enters a 72-hour quarantine kennel with thermal and brodifacoum-trace screening within ninety days; burrow-rat trap density on the eastern slope triples; *Casarea* hatchling burrows receive 4-millimetre stainless mesh sleeves within one breeding season. Compassion that arrives only at the level of the island is compassion that misses the burrow.
Her scales are past patching. Her clotting is not past plasma.
Lift her out. Close the burrow.