For centuries, the mosquito's role in human disease has been scrutinized, yet its quieter work among birds has gone largely unmapped. A two-year study by Dr. Jenny Dunn at Keele University has now begun to chart that hidden landscape, identifying nine of twelve British mosquito species as carriers of avian malaria parasites — and naming, for the first time, the specific vectors linking particular parasites to particular birds. The findings arrive at a moment when shifting climates are redrawing the boundaries of where mosquitoes live and what they carry, lending the science an urgency that ext