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Pinedale Online > News > March 2010 > Twenty-one packs produced pups in 2009

Packs and Pairs. Photo by FWS.
Packs and Pairs
The number of wolf packs and breeding pairs in Wyoming, 1999-2009. U.S. Fish & Wildlife Services graphic.
Twenty-one packs with pups
by Cat Urbigkit, Pinedale Online!
March 26, 2010

The U.S. Fish and Wildlife Service reports that in 2009 in
Wyoming (outside the national parks):

"A total of 21 packs produced >89 pups and met the FWS
breeding pair definition.

"Breeding pairs in 2009 included: Absaroka, Beartooth,
Buffalo (2 litters), Butte Creek, Carter Mtn., Chagrin River, East Fork, Elk Fork Creek, Gooseberry, Green River, Greybull River, Hoodoo, Lava Mtn., Pacific Creek, Pahaska, Phantom Springs, Pinnacle Peak, Rim, South Fork, Sunlight, and Washakie.

"Mean litter size of pups surviving to 31 December 2009 was 4.1 pups per litter and ranged from 2-14 pups (14 pups were a double litter).

"We were not able to confirm pup production in: Big Piney, Bold Mtn., Daniel, Gros Ventre, Popo Agie, and Whiskey Basin Packs.

"The Dog Creek, Antelope, and Black Butte Packs did not contain >2 adults and >2 pups on 31 December 2009."

Related Links
  • Wolf Watch - By Cat Urbigkit
  • Pinedale Online > News > March 2010 > Twenty-one packs produced pups in 2009

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