Researchers are just great arent they????? 
I’ve written a number of essays that have centered on the question, “Should animals be killed in the name of, or under the guise of, conservation?” The basic foundation of the rapidly growing field of compassionate conservation,  “First do no harm,” maintains that the lives of individual animals matter and that killing in the name of conservation should not be done (see here ).
Just recently this question arose once again when the Canadian Journal of Zoology(CJZ) published a research article by Dave Hervieux, Mark Hebblewhite, Dave Stepnisky, Michelle Bacon and Stan Boutin titled “Managing wolves (Canis lupus) to recover threatened woodland caribou (Rangifer tarandus caribou) in Alberta ” that presented the outcome of an “experiment” in mass killing in which 890 Canadian wolves suffered and died using aerial gunning, trapping and poisoning with strychnine. The strychnine also killed other animals who were not part of the study. Minimum “collateral damage” that was deemed acceptable by the researchers and the CJZ included 91 ravens, 36 coyotes, 31 foxes, 8 marten, 6 lynx, 4 weasels and 4 fisher. (For more on how wolves are highly stressed when hunted please see “Wolves: Hunting Affects Stress, Reproduction and Sociality .”)
Researchers Kill 890 Wolves to Learn About Them: There’s Something Very Wrong | Marc Bekoff.