Doug Gimesy / Firefighters from Melbourne's Metropolitan Fire Brigade (MBF) try and help cool down Melbourne's Yarra Bend Grey-headed flying-fox (Pteropus poliocephalus) colony by spraying water on them. Pa...

Sergio Hanquet / Helicopter fighting forest fire. Ifonche, Tenerife, Canary Islands, 2012.

Sergio Hanquet / Helicopter fighting forest fire. Ifonche, Tenerife, Canary Islands, 2012.

Sergio Hanquet / Helicopter fighting fire in Canary Island pine (Pinus canariensis) forest. Ifonche, Tenerife. Canary Islands.

Sergio Hanquet / Helicopter in cloud of smoke, fighting fire in Canary Island pine (Pinus canariensis) forest, houses in foreground. Ifonche, Tenerife, Canary Islands, 2012.

Tony Heald / Fire service helicopter with water dump container. Cape Town, South Africa. 2015.

Jiri Lochman / Indian police and undercover antipoaching agent Anne Wright with a haul of Tiger and Leopard skins confiscated from poachers in Central India. Kolkata India. 1989.

Jiri Lochman / Indian policeman with a haul of Tiger, Leopard and Deer skins and bones confiscated from poachers near Kanha National Park, Central India. 1989.

Jiri Lochman / Indian police with a haul of Tiger, Leopard and Deer skins and bones confiscated from pouchers near Kanha National Park, Central India. 1989.

Oscar Dewhurst / Black-legged kittiwakes (Rissa tridactyla) and the fire brigade coming to rescue a juvenile trapped by netting installed to prevent the kittiwakes nesting on the buildings. Newcastle, UK. July

Oscar Dewhurst / Black-legged kittiwakes (Rissa tridactyla) and the fire brigade coming to rescue a juvenile trapped by netting installed to prevent the kittiwakes nesting on the buildings. Newcastle, UK. July

Oscar Dewhurst / Black-legged kittiwake (Rissa tridactyla) juvenile that has been rescued by the fire brigade, having become trapped in netting installed on buildings to prevent kittiwakes from nesting on them. Newcas...