The warning signs are there, but they don’t point to a single cause.

Madagascar’s rainforests are home to frogs found nowhere else on Earth, species so tightly bound to the island that they exist within single valleys, streams, or elevations. Some are no larger than a fingernail, others shimmer with colors that seem unreal. That extreme specialization makes them extraordinary, and dangerously vulnerable. When one population disappears, there is no backup elsewhere.
Because these frogs are endemic, their loss would erase entire evolutionary lineages, not relocate them. Their calls once signaled healthy forests and stable food webs, regulating insects and cycling nutrients in ways that kept ecosystems steady. Now researchers are finding silence where abundance should still exist, suggesting an extinction wave already moving through the canopy. The pattern suggests not isolated loss, but a broader unraveling already underway.



