Moths use their antennae and wings to sense the direction and intensity of a mating pheromone emitted by the female of their species. They follow this chemical plume back to the female through a process called pheromone tracking. Male moths can detect extremely small concentrations of pheromone molecules in the air. They do this by combining input from different pheromone-detecting receptor neurons housed in specialized structures on their antennae and their ability to sense air flow over their wings with extreme sensitivity. The receptor neurons send electrical signals to their brain to inform their flight path corrections towards the female moth releasing the pheromone.