2011 WDNR Wolf data

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5 years 5 months ago #45 by WWH Admin
2011 WDNR Wolf data was created by WWH Admin
Wolf Captures
Twenty were live-captured and radio-collared in 2011 . Collars were placed on 14 of 203 packs
(13%) detected in the state in winter 2011, and on 2 packs not previously detected (Potato River & Little
Moose River). Collars were also placed on 1 wolf that mainly appeared to be loner/disperser. Nine wolves
were captured by fur trappers in the fall and turned over to WDNR for radio-collaring, including one wolf
captured 2 times by 2 different trappers. The other 11 wolves were captured by WDNR, and USDA-WS.
Captured wolves included: 6 adult males ( X = 82.5 lbs. + 11.4 SD), 10 adult females (67.4 lbs. + 3.1 SD), 1
pup male (40 lbs.) and 3 pup females (50-64 lbs in Fall).

Radio Collared Wolves Monitored in 2011
A total of 82 radio collared wolves were monitored during portions of 2011 (Table 2). Radio-collared wolves
monitored during the year included 73 Wisconsin packs. Wisconsin packs with collared wolves included 71
or 35 % of the 203 packs detected in winter 2011 (Wydeven et al. 2011). Two new packs were detected after
the winter 2010 surveys. Three radio-collared wolves were mostly loners/disperser while on the air in 2011.
During the year, 21 collared wolves died, radio signals were lost on 14 wolves, and 3 lost radio collars. Age
and gender of wolves monitored (during most of 2011, or at time of death or signal lost) included 25 adult
males, 51 adult females, 1 yearling male, 1 yearling female, 1 pup male, and 3 pup females. At the end of
2011, 44 wolves remained on the air including: 12 adult males, 28 adult females, 1 yearling male, 1 pup male,
and 2 pup females.

Wolf Mortality
A total of 80 wolves and 1 wolf-dog hybrid were found dead in Wisconsin in 2011 (Table 3). The sample of
wolves found dead included: 25 adult males, 20 adult females, 6 yearling males, 5 yearling females, 3 pup
males, 4 pup females, 4 unknown adults, 1 unknown yearling, 2 unknown pups, 4 unknown age females,
and 6 unknown age & gender, and (unknown age were probably yearlings or adults). The wolf dog hybrid
was an adult male. Only 9 (11%) of dead wolves were determined to be pups, which are probably under
represented in the mortality data. Previous estimates have indicated that as many at 70% of estimated pups
produced die each year, but deaths among wolves 1.0 year or older averaged about 25% annually (Wydeven
et al. 2009).
Among 21 wolves actively monitored (some of these are preliminary) by the Wisconsin DNR: 9 (43 %)
were shot illegally, 2 (10 %) were euthanized for human safety concerns, 6 (29 %) were killed by vehicles,
1 (5%) died from capture related activity, 1 (5%) wolf apparently died from artillery fire on a military base, 1
(5 %) died from disease (mange), and 1 (5 %) died from other wolves. From the total of 82 of radio-collared
wolves monitored by WDNR in 2011, at least 21 wolves died for an overall rough mortality rate of 26 %.
This mortality rate for mostly wolves over 1 year old would be moderate, but some of the wolves whose
signals were lost may have included additional wolves that died.
Among the overall sample of 80 wolves found dead in the state in 2011 mortality included: 25 ( %) illegal
shooting , 4 ( %) euthanized in human safety concerns, 42 ( %) vehicle collisions, 1 (1%) artillery fire, 1
(1%) capture related, 1 (1%) disease (mange), 2 (2 %) other wolves, and 4 (5 %) unknown mortalities.
Among the overall sample of 80 dead wolves, at least 91 % died from human caused mortality, compared to
90 % of the radio collared sample. Most years the radio collared sample has much lower rates of human
caused mortality than the overall sample. The radio-collared sample is probably a less biased assessment of
overall mortality affecting wolves, but mainly reflects mortality among adults, and may not be as
representative of dispersers living in more marginal habitat across the state. During 2011 both sample sets
indicated humans were the main cause of mortality for wolves in Wisconsin.

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5 years 5 months ago #51 by DuaneFronek
Replied by DuaneFronek on topic 2011 WDNR Wolf data
Artillery fire? lol wouldn't that fall under shooting. Its well worth looking at all the data on the DNR web. What I've noticed is they always keep the mortality data pretty even with the reproduction data. If you look at their pup data as to how many pups were born and compare it to the data how wolf deaths it appears the wolves aren't multiplying and I think that data is done intentionally due to the fact that wolves were untouchable until now and the fact there are some wolf nuts in the dept who don't want to see them hunted or trapped. The elk project in this state is suffering badly and its due in part and mostly wolves but they skirt around it all the time yet our dollars are supporting it.

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