This member of the blowfly family doesn’t have a nice job but it’s definitely a key worker. It lays its eggs in rotting meat and the maggots that hatch out polish off the carcass, leaving clean bones and a fresh crop of body-snatchers to fly off. Without them the world would, at best, be a more unpleasant place to live. Their cousin, the greenbottle, does a similarly useful job on poo!