This annual swarming event usually occurs in July or August and coincides with a period of hot and humid weather. Museum scientist Suzanne Ryder explains more about this phenomenon. Get more details: https://www.nhm.ac.uk/discover/when-why-winged-ants-swarm-nuptial-flight.html ---------------- The Natural History Museum in London is home to over 80 million specimens, including meteorites, dinosaur bones and a giant squid. Our channel brings the Museum to you - from what goes on behind the scenes to surprising science and stories from our scientists. Subscribe to our channel for the latest films and live broadcasts about the natural world null Website: http://www.nhm.ac.uk/​ Twitter: http://twitter.com/NHM_London​ Facebook: http://fb.com/naturalhistorymuseum​ Instagram: http://instagram.com/natural_history_...