In this July 24, 2013 photograph, Linsdey Gordon sets up a radio 

In this July 24, 2013 photograph, Linsdey Gordon sets up a radio collar tracking device in Grayslake, Ill., to test the collars placed on the released meadow jumping mice. Scientists at Lincoln Park Zoo are raising meadow jumping mice and and releasing them into the wild in an effort to help restore dwindling Midwestern prairies. (AP Photo/Scott Eisen)
Associated Press
In this July 24, 2013 photograph, Linsdey Gordon sets up a radio collar tracking device in Grayslake, Ill., to test the collars placed on the released meadow jumping mice. Scientists at Lincoln Park Zoo are raising meadow jumping mice and and releasing them into the wild in an effort to help restore dwindling Midwestern prairies. (AP Photo/Scott Eisen)
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