A Deadly Bird Disease Has Taken Over Hawaiʻi’s Forests

A new Hawaiʻi study found that nearly all forest bird species, native and introduced, can infect mosquitoes with avian malaria.

Researchers detected the parasite at 63 of 64 sites, showing the disease is widespread across the islands.

Long-lasting infections in many bird species appear to help sustain transmission, explaining how avian malaria has spread so broadly.

The findings help explain the severe decline of native honeycreepers and raise the stakes for mosquito control and habitat protection.