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