Mosquitoes have a pair of scaled wings, a pair of halteres (flight stabilizers), a slender body, and long legs. Mosquitos detect blood resources through the carbon dioxide in a mammal’s exhaled breath. Once in close proximity, the mosquito can also see infrared (heat). During the heat of the day most mosquitoes rest in a cool place and wait for the evenings, but they may still bite if disturbed. A mosquito can fly at up to 1–2 km/h with a maximum travelling distance of about 10 km per night. This slow speed of flight means keeping a fan on overnight can be an effective means of preventing bites.