For the first time, researchers have mapped the range of wild pigs across Canada and found the numbers of invasive swine are rising rapidly. Wild pigs are now Canada's most prolific invasive mammal, according to what the University of Saskatchewan calls the first-ever published survey of their distribution in Canada — and they're causing an "ecological disaster." The wild pigs are the legacy of a failed attempt to diversify meat production with wild boars. Researchers in a helicopter use a net gun to capture and put GPS collars on wild pigs. Researchers say wild pigs are very hard to eradicate.

Source: CBC News May 15, 2019 14:06 UTC