In this July 19, 2013 photograph, reintroduction biologist Allison Sacerdote-Velat adjusts a 

In this July 19, 2013 photograph, reintroduction biologist Allison Sacerdote-Velat adjusts a radio collar prior to putting it on a meadow jumping mouse at the Lincoln Park Zoo in Chicago. 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 19, 2013 photograph, reintroduction biologist Allison Sacerdote-Velat adjusts a radio collar prior to putting it on a meadow jumping mouse at the Lincoln Park Zoo in Chicago. 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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