Lesser house fly
where they remain in flight as they wait to be visited by an unmated female. Female flies are less active and tend to remain close to breeding sites, where [...] species can be found worldwide, from the arctic to the temperate neotropics, and they typically reproduce in feces, compost and carrion. These flies are often [...] pathogens from contaminated breeding sites to healthy animals over large distances. Fannia flies have been confirmed to carry the viruses that cause Newcastle