During an extreme heat-stress event where temperatures exceeded 40°C at Melbourne's Yarra Bend Grey-headed Flying-fox colony, Melbourne Zoo veterinarian Sarah Frith (right) gives in-filed triage to a suffering young and Grey-headed Flying-fox (Pteropus poliocephalus) by providing cool fluids. Assisted by wildlife rescuer and carer Kate Chamberlain. Yarra Bend Golf Course, Fairfield, Victoria, Australia. December 2019. Editorial use only.