Experts to use drones to discover more about killer whales

Posted on Wednesday 10 August 2016

Experts from the Universities of York, Exeter and the Center for Whale Research in Washington State, USA, believe drone footage could revolutionise our understanding of whale behaviour.

Researchers have so far analysed hundreds of hours of video of killer whale family groups, observing their relationships during fleeting glimpses as the whales surface for breath. They found female killer whales who survive after menopause pass on crucial information which helps their family members to find food during hard times.

Only humans and some whales continue to live for many years after giving birth to their last offspring. Such research provides possible insights into the reasons behind this, and is the subject of a new BBC Radio 4 documentary.

The research team, funded by the Natural Environment Research Council, has so far focused on the vital social roles post-menopausal matriarchs have in the social killer whale community.

Now, researchers want to collect new data about how whales interact. Using drones will give them a birds-eye view of social behaviour, allowing them to see how whales support each other, and which whales in a group share food, intervene during conflict and babysit.

This information will allow experts to understand which social behaviour helps whale reproductive success, to make more accurate predictions for their health and survival.

They hope the public will support their work through a crowdfunding campaign launched by the University of Exeter this week.

Dr Dan Franks, Reader in York’s Department of Biology, said: “The killer whales that we work on are majestic and iconic animals. But they are listed as endangered and it’s thought that the population could be extinct within the next century if conditions do not improve.”

“They are an extremely social animal and family members support and help each other. Drones will provide us with a birds-eye view of interactions – such as food sharing and babysitting – allowing us to study the impact of social behaviour on their health, survival and reproduction.”

Professor Darren Croft, of the University of Exeter, said: “The killer whales we have been working with live on a knife edge and are at risk of extinction.The population has been listed as endangered since 2003 and two critical questions have been highlighted - what is causing decreased reproduction and increased mortality?”

“The major research priority for us is to collect new data that will allow us to record behavioural interactions. With drone information we can refine our analysis of population viability and future predictions for the health and survival of these amazing animals.”