Found some interesting reading from the Montana Dept. of Wildlife home page. I have heard stories from people hunting the migration from Yellowstone into Wyoming in 2005 that all they were seeing were old, big bulls. No young stuff. While this study took place using elk from the Gardiner MT area, seems to confirm what was being seen in Wyoming:
"Recent analysis shows that the average age of elk harvested in 2005 during the Gardiner late season elk hunt hit record highs?8.2-years old for cows, and 9.1-years old for bulls. Ten years ago, the average was 6.2 and 5.9 years of age respectively."
And as far as calf recruitment:
"Here again, the Northern Yellowstone elk are struggling. Aerial surveys indicate that, for the past four years, only 12-14 calves per 100 cow elk survived the first year of life and joined the herd. Recruitment of about 30 calves per 100 cows is more typical for northern Yellowstone elk."
"Recent studies in Yellowstone National Park show that about 70-75 percent of newborn radio-tagged northern Yellowstone elk calves are dead within a year of their birth, mostly due to predation. Predators include primarily bears, wolves, and coyotes?with bears accounting for 55-60 percent of the mortality and wolves and coyotes with another 10-15 percent each."
This herd is going to suffer a drastic decline in the next couple years.
Here is the link to the entire article:
http://fwp.mt.gov/news/article_4065.aspx
"Recent analysis shows that the average age of elk harvested in 2005 during the Gardiner late season elk hunt hit record highs?8.2-years old for cows, and 9.1-years old for bulls. Ten years ago, the average was 6.2 and 5.9 years of age respectively."
And as far as calf recruitment:
"Here again, the Northern Yellowstone elk are struggling. Aerial surveys indicate that, for the past four years, only 12-14 calves per 100 cow elk survived the first year of life and joined the herd. Recruitment of about 30 calves per 100 cows is more typical for northern Yellowstone elk."
"Recent studies in Yellowstone National Park show that about 70-75 percent of newborn radio-tagged northern Yellowstone elk calves are dead within a year of their birth, mostly due to predation. Predators include primarily bears, wolves, and coyotes?with bears accounting for 55-60 percent of the mortality and wolves and coyotes with another 10-15 percent each."
This herd is going to suffer a drastic decline in the next couple years.
Here is the link to the entire article:
http://fwp.mt.gov/news/article_4065.aspx