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New research reveals that more than 10% of Welsh livestock farmers have killed badgers illegally

17/01/2013 15:25:39 uk/wildlife_june_09/badger_crop_wx Rolling dice reveals level of illegal badger killing

January 2013. A little-used method for estimating how many people are involved in sensitive or illegal activities can provide critical information to environmental policy makers involved in the proposed UK badger culling scheme, according to new research.

‘Innovative techniques for estimating illegal activities in a human-wildlife-management conflict', a paper written by a research team from Bangor University, the University of Kent and Kingston University, has revealed - for the first time - the estimated rate of illegal badger killing.

More than 10% of livestock farmers in Wales have illegally killed badgers
Using a method known as the randomised response technique (RRT), the research has shown that more than 10% of livestock farmers in Wales have illegally killed badgers in the 12 months preceding the study. Previous research does not sufficiently consider whether illegal badger killing contributes to the spread of bovine tuberculosis (bTB) to livestock.

Is badger culling the answer to TB in cattle?                        Join the survey.

A student from Hereford is running an investigation into bTB and badger culling. If you have a few secons spare, please help by completing this survey.

Does badger killing add to bTB spread?
The team suggest that it would be interesting to model how such a rate of illegal badger killing could be contributing, or not, to the spread of bTB, particularly as badger movements are effected when social groups are disrupted.

Dr Paul Cross, from Bangor University's School of Environment, Natural Resources & Geography explains: ‘The proportion of farmers estimated to have killed badgers should be considered by policymakers and in the wider debate.

‘Intensive badger culling is one approach being considered by policy makers in an attempt to control the spread of tuberculosis in cattle. However, studies investigating the effects of badger culling on TB outbreaks in cattle have not factored in the prevalence of illegal badger killing, and its potential to spread disease.'

Dr Freya St John, from the University of Kent's Durrell Institute of Conservation and Ecology (DICE), said: ‘Attempting to resolve the issues regarding badgers as carriers of bovine TB requires cross-disciplinary scientific research, a departure from deep-rooted positions, and the political will to implement evidence-based management. We believe that this study makes an important contribution to that debate.'

Random response
RRT requires respondents to roll two dice before answering sensitive questions such as ‘have you killed a badger in the last 12 months'. The result of the dice roll is never revealed to researchers, it is the respondents' secret. Crucially there are instructions associated with the dice roll, for example, if the sum of the dice equals five through to ten, answer truthfully; if the sum is between 2 and 4, answer ‘yes'; and if the sum is 11 or 12, answer ‘no'. The role of ‘forced' answers adds noise to the data so that a ‘yes' answer doesn't necessarily mean that a respondent committed an illegal act.
The research was published in PLOS ONE

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