Mystery surrounds the “completely unprecedented” deaths of hundreds of elephants in Botswana over the last two months.
Dr Niall McCann said colleagues in the southern African country had spotted more than 350 elephant carcasses in the Okavango Delta since the start of May.
But they have been unable to rule out either poisoning or disease. The way the animals appear to be dying — many dropping on their faces — and sightings of other elephants walking in circles points to something potentially attacking their neurological systems, Dr McCann said.
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