Hyrum, US
A helicopter transports three mule deer to a field clinic where the Division of Wildlife Resources will check their condition to determine how they fared during the winter in Utah. The staff collect data to measure loin thickness, rump fat and physical size to arrive at an overall score of the proportion of body fat. The animals were captured and measured last autumn, so the new data will reveal how well they have survived during the most difficult time of the year
Photograph: Natalie Behring/AFP/Getty Images
