In November 2015, Slovenia erected a technical security barrier in the form of a razor-wired fence along the most exposed parts (178 km) of the Slovenia-Croatia border. Over a 10-month period (11 November 2015–11 September 2016), carcasses of 21 ungulates (13 red deer and 8 roe deer) and two grey herons were found entangled in the razor-wired fence, giving a mortality rate of 0.12 ungulates/km of...
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