State, Federal Wolf Managers
Offer Mid-Year Wolf Population Report
September 28, 2007
Columbia Basin Fish and Wildlife News
Each year state and federal wolf managers compile
a rough mid-year wolf population estimate for wolves
in the northern Rocky Mountains.
Official interagency estimates in the 2007 annual
report likely will be different and more accurate
than these because of better wolf monitoring
conditions in fall and winter and increased levels
of wolf mortality and dispersal later in the year.
These figures give insight into the likely trend
of the wolf population, conflicts and control
relative to last year. Overall, the northern Rocky
Mountain wolf population in 2007 will be higher,
wolf control about the same and confirmed livestock
depredations lower than that documented in 2006.
Breeding pairs comprise an adult male and female
and two or more pups on December 31, so the mid-year
estimate is what might be present at the end of the
year and probably is high.
In Idaho, the mid-year population estimate was
for 788 wolves in 75 packs with 41 breeding pairs,
which is up from 2006 with 673 wolves in 69 packs
and 40 breeding pairs.
This year so far, 36 cows and 150 sheep have been
confirmed as wolf kills -- 46 wolves have been
killed. In 2006, 29 cows and 205 sheep were
confirmed wolf kills -- 45 wolves were killed.
Across the northern Rockies this year the total
estimated wolf population is 1,545 wolves in 179
packs with 105 breeding pairs. In 2006, the number
was 1,300 wolves in 172 packs and with 86 breeding
Total mortalities in Idaho, Montana and Wyoming
so far are 111 cows and 185 sheep. And 134 wolves
have been killed. In 2006 the numbers were 184 cows
and 247 sheep confirmed wolf kills. And 142 wolves
The U.S. Fish and Wildlife Service considers the
wolf recovered in the northern Rocky Mountains and
has started the process to remove the wolf from the
federal endangered species list. The Fish and
Wildlife Service's weekly wolf reports as well as
annual reports, can be viewed at http://westerngraywolf.fws.gov/.