Grey-headed flying foxes are one of the largest bat species in the world; known as megabats. Their faces resemble that of a fox, with light grey fur on the head and a russet collar encircling the neck. Their scientific name is Pteropus poliocephalus. They are the only mammals capable of active flight with a wingspan of up to a metre long and they fly up to 40 kilometres a night. They are commonly known as fruit bats because of their passion for backyard bounty.