Wolf lovers fear worst after OR-93′s radio collar goes dark - oregonlive.com
SMART Collars Reveal the Hidden Lives of Wolves (U.S. National Park Service)
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An expandable radio collar for monitoring young terrestrial mammals
GPS and VHF Tracking Collars used for Wildlife Monitoring
Wolf lovers fear worst after OR-93′s radio collar goes dark - OPB
a) Mandrill with radio collar and (b) | Download Scientific Diagram
Polar bear injured by radio collar part of U of A study, Environment Canada says | CBC News
GPS and VHF Tracking Collars used for Wildlife Monitoring
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The Collared Wolf: Symbol of the West
Wyoming Game and Fish Department - You can help wildlife by returning tracking collars intact
GPS animal tracking - Wikipedia
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