Extinction is rarely a moment. It is a process that unfolds offstage, marked by missed sightings, thinning records, and the slow reassignment of hope to footnotes. This year, a small group of species crossed a final bureaucratic threshold. Following new assessments, they were formally listed as extinct on the IUCN Red List. For science, the change was technical. For the rest of us, it served as an obituary long overdue.
What distinguishes these losses is not sudden catastrophe but duration. Each species lingered in uncertainty, sustained by rumor, fragmentary evidence, or the conviction that nature is resilient if left alone. In most cases, it was not.
Slender-billed curlew:
A migratory shorebird that once threaded together Siberia, Europe, and North Africa, it evaded detection for decades until its absence became conclusive. The last photograph was taken in Morocco in 1995, after which concern outpaced action.
Christmas Island shrew:
A small mammal that slipped quietly away on a remote Australian island, likely undone by disease carried by introduced rats. By the mid-1980s, its presence was reduced to a final, unremarkable record.
Three Australian bandicoots:
The marl, southeastern striped, and Nullarbor barred bandicoots disappeared between the late 1800s and early 20th century, casualties of habitat loss and feral cats. Their formal extinction came long after the animals themselves were gone.
Two plants:
A Mauritian tree and a Hawaiian shrub survived only as herbarium sheets, their disappearance noticed years after the landscapes that sustained them were altered.
A cone snail:
Once common along a short stretch of the Cape Verde coast, it vanished as development remade its shoreline.
The Red List does not mourn. It records. But its updates sometimes read like gravestones, reminding us that conservation failures are often recognized only once they can no longer be reversed.
🪦 Shreya Dasupta’s piece: Declared extinct in 2025: A look back at some of the species we lost
