Kayla, a 37-year-old 61.2kg female, in the procedure room with her stomach shaved for an ultrasound at the Save the Chimps chimpanzee sanctuary, Fort Pierce, Florida. Socks have been placed on her extremities and a fur hat with flaps on her head to avoid hypothermia. Gold in the Nature photojournalism category.
Photograph: Alain Schroeder/World Nature Photography awards

