Best Award Winning Wildlife Photography of the Year 2017
Monarchs in the Snow, by Jaime Rojo, World Press Photo awards, nature category, third prize, singles
A carpet of monarch butterflies covers the forest floor of El Rosario butterfly sanctuary in Michoacan, Mexico after a strong snow storm. The storm hit the mountains of central Mexico, creating havoc in the wintering colonies of monarch butterflies just as they were starting their migration back north to the US and Canada. Climate change is creating an increase in these unusual weather events, representing a huge challenge for these usually resilient insects during their hibernation.
Photograph: Jaime Rojo/Reuters