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

In this July 19, 2013 photograph, reintroduction biologist Allison Sacerdote-Velat moves a radio tracking collar over a meadow jumping mouse's nose 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 moves a radio tracking collar over a meadow jumping mouse's nose 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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