New Delhi, Nov. 6 -- Dozens of biodegradable pods were previously dropped by drones over Hawaii's forests. Each drone carried around 1,000 specially bred male mosquitoes. Read on to find out why.

These mosquitoes don't bite and carry a harmless bacterium that stops eggs from hatching when they mate with wild females. The aim is to reduce the invasive mosquito population that is wiping out native Hawaiian birds, especially the rare honeycreepers, CNN reported.

Hawaii once had over 50 honeycreeper species, but only 17 remain, and most are endangered. While deforestation has harmed the birds, experts say the biggest threat is the spread of avian malaria by mosquitoes, according to Dr Chris Farmer. He is the Hawaii program director for the ...