Someone crossed a kiwi with a cassowary, then fed it nothing but spite and tubers for ten million years. That is Aptornis. It stood about eighty centimetres tall, weighed as much as a large goose, and looked like it had been designed by a committee that hated grace. Its legs were thick, its wings were vestigial stumps useless for flight, and its beak – a heavy, downward-curving weapon that resembled a prehistoric adze tool – was a bone-cracking, shell-shattering, root-digging excavator. It stalked wetlands like a feathered velociraptor in slow motion. Isotope analysis of its bones suggests it was an omnivore with serious carnivorous leanings – it ate large invertebrates, small reptiles, bird eggs, and probably carrion. That beak was also perfect for levering up stoneflies, worms, and beetle grubs from muddy banks. Unlike the moa, which browsed quietly, the adzebill was a destructive forager, flipping logs and smashing snail shells like a feathered pig. We don't know much about its breeding. It laid large eggs – fragments have been found – and like most flightless birds, it was a slow reproducer. That sealed its fate. When Polynesian settlers arrived, they brought the kiore (Pacific rat), hunted adult birds for food (they were meaty and slow), and – critically – drained and burned wetlands for cultivation. The adzebill was a swamp specialist. Take away the swamp, you take away the bird. It held on for a few centuries, then quietly winked out. No last sighting. No mourning song. Just bones in a peat bog. The South Island species and the North Island species both vanished, their ranges shrinking as the wetlands disappeared. The adzebill was not a bird of the open country. It needed soft ground, thick cover, and the kind of wet, tangled habitat that early settlers drained first. Compare it to the moa. The moa arrived with the first settlers and lived long enough to be hunted, remembered, and woven into lore. The adzebill vanished so fast it barely touched the living memory of the land. It is the forgotten cousin of extinction, a bird that slipped away before anyone thought to name it. It is a reminder that extinction doesn't need a meteor. Sometimes it just needs a drain.