As dawn breaks in central Kenya, a helicopter lifts off in a race to find roosting locusts before the sun warming their bodies and sending them on a ravenous flight through farmland.
Pilot Kieran Allen begins his painstaking survey from zebra-filled plains and lush maize farms, to dramatic forested valleys and the vast arid expanses further north, his eyes scouring the landscape for signs of the massed insects.
The chopper suddenly swings around after a call comes in from the locust war room on the ground: a community in the foothills of Mount Kenya has reported a swarm.
"I am seeing some pink in the trees," his voice crackles over the headphones, pointing to a roughly 30-hectare (75-acre) swathe of desert locusts.