Yellowstone Winter Wildlife on Yahoo! News Photos

FILE - This Jan. 9, 2003 file photo provided by the U.S. Fish ...

(AP) — Sun, 07 Feb 2010 20:21:53 GMT

(AP) - FILE - This Jan. 9, 2003 file photo provided by the U.S. Fish and Wildlife Service shows a 130-pound gray wolf as it watches biologists in Yellowstone National Park, Wyo., after being captured and fitted with a radio collar. With ballooning elk and deer populations eating up greenery and altering ecosystems at national parks across the country, a group of researchers is suggesting an unusual solution: introduce small packs of gray wolves to curb the expanding herds. (AP Photo/U.S. Fish and Wildlife Service, William Campbell, File)

In this Saturday, Jan. 30, 2010 photo, a spike elk is wrapped ...

(AP) — Fri, 05 Feb 2010 00:22:08 GMT

(AP) - In this Saturday, Jan. 30, 2010 photo, a spike elk is wrapped in plastic after attempting to spar with it near Gardiner, Mont. in Yellowstone National Park. (AP Photo/Bozeman Daily Chronicle, Erik Petersen)

FILE - In this Feb. 7, 2008 file photo, Ted Turner smiles during ...

(AP) — Sun, 17 Jan 2010 17:54:13 GMT

(AP) - FILE - In this Feb. 7, 2008 file photo, Ted Turner smiles during an interview with the Associated Press, in Omaha, Neb. With 88 bison from Yellowstone National Park facing possible slaughter, Turner has swept in and offered to hold the animals for five years on his sprawling Montana ranch while a new home for them is found. (AP Photo/Nati Harnik, File)

FILE - This Feb. 15, 2008 file photo shows Bison grazing on ...

(AP) — Sun, 17 Jan 2010 17:53:59 GMT

(AP) - FILE - This Feb. 15, 2008 file photo shows Bison grazing on the front lawn of Gardiner Public School just outside the north entrance to Yellowstone National Park in Gardiner, Mont. With 88 bison from Yellowstone National Park facing possible slaughter, billionaire Ted Turner has swept in and offered to hold the animals for five years on his sprawling Montana ranch while a new home for them is found. (AP Photo/William Kronholm, File)

FILE - In this April 29, 2003 file photo, a bison on the Ted ...

(AP) — Sun, 17 Jan 2010 17:53:21 GMT

(AP) - FILE - In this April 29, 2003 file photo, a bison on the Ted Turner property near Oshkosh, Neb, looks at passing cars from behind a fence. With 88 bison from Yellowstone National Park facing possible slaughter, billionaire Ted Turner has swept in and offered to hold the animals for five years on his sprawling Montana ranch while a new home for them is found. (AP Photo/Nati Harnik, File)

This January 2001 photo released by the National Park Service ...

(AP) — Wed, 24 Dec 2008 16:42:44 GMT

(AP) - This January 2001 photo released by the National Park Service shows five bull elk in the snow near Wraith Falls trailhead in Yellowstone National Park. (AP Photo/NPS, Jim Peaco)

In this Jan. 26, 2002 file photo a tour bus stops to let a wolf ...

(AP) — Wed, 24 Dec 2008 16:42:34 GMT

(AP) - In this Jan. 26, 2002 file photo a tour bus stops to let a wolf cross the road in Yellowstone National Park, Wyo. (AP Photo/Nati Harnik, File)

In this Feb. 16, 2005 file photo buffalo graze in a frozen forest ...

(AP) — Wed, 24 Dec 2008 16:42:23 GMT

(AP) - In this Feb. 16, 2005 file photo buffalo graze in a frozen forest inside Yellowstone National Park in Wyoming. (AP Photo/Laura Rauch, File)

This January 2004 photo released by the National Park Service ...

(AP) — Wed, 24 Dec 2008 16:42:15 GMT

(AP) - This January 2004 photo released by the National Park Service shows a Bighorn Sheep ram sitting on a ridge above Soda Butte Creek in Yellowstone National Park. (AP Photo/NPS, Jim Peaco)

Wildlife photographers watch a herd of bison along Soda Butte ...

(AP) — Wed, 24 Dec 2008 16:41:49 GMT

(AP) - Wildlife photographers watch a herd of bison along Soda Butte Creek in the northeastern corner of Yellowstone National Park on Feb. 15, 2008. Winter is prime time for viewing wildlife in Yellowstone. (AP Photo / William Kronholm)

Bison graze on the front lawn of Gardiner Public School just ...

(AP) — Wed, 24 Dec 2008 16:41:47 GMT

(AP) - Bison graze on the front lawn of Gardiner Public School just outside the north entrance to Yellowstone National Park in Gardiner, Mont. on Feb. 15, 2008. (AP Photo / William Kronholm)

This Feb. 16, 2006 photo released by the National Park Service ...

(AP) — Mon, 15 Dec 2008 17:54:34 GMT

(AP) - This Feb. 16, 2006 photo released by the National Park Service shows a Wolf near Blacktail Pond in Yellowstone National Park. (AP Photo/ NPS, Jim Peaco)