In the late winter when the snow is deeper, about 30% of hunts end in kills. During most of the year, hunts are usually unsuccessful with only about 20% resulting in kills. Wolves tend to stalk and sneak up on prey, while chasing is used to find any weak animals. Several wolves are fitted with tracking collars, especially alphas. These wolves are highly visible which helps people study them. According to the Greater Yellowstone Coalition in 2013, almost 440 wolves lived in the Greater Yellowstone Area, with over 80 living within the park’s borders ( ). As of 2002, the Yellowstone area population was estimated to be 200-220 individuals. This was done to ensure sufficient genetic variation to build upon for future populations if all the wolves were related, inbreeding would have occurred which creates weak offspring, and repopulation would not have been successful. These pioneers were all taken from 3 different locations in Canada, and were from 9 different packs. 17 more wolves and 10 pups were added in 1996, for a total of 41 wolves. In 1995, 14 wolves were removed to Yellowstone. Since the reintroduction of grey wolves in 19, scientists have been able to track population growth and pack activity, as well as their impact on the environment. I will supplement as needed from other sources.īeing able to study these Yellowstone wolf populations from their very beginning has huge scientific advantages. Just as a disclaimer, this book was published in 2003, so it only includes information from 1995 to 2002. This book discusses the return of the grey wolf to Yellowstone National Park and covers lots of behaviors that have been observed. So I recently read “Yellowstone Wolves in the Wild” by Dr.
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