Satellite tag reliability: compelling evidence from Montagu’s Harrier study

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Satellite-tagged hen harriers regularly ‘disappear’ in the UK uplands, mostly in areas managed as driven grouse moors. Indeed, according to data from Natural England, of 47 hen harriers that were satellite-tagged between 2007-2014, a staggering 78.7% were listed as ‘missing’ (see here). That means a significant and suspiciously high proportion (37 tagged hen harriers) vanished […]
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