If you are familiar with the 1996 coming of age drama "Fly Away Home" then you will see several similarities in this scientific reality happening in Europe. The Waldrapp Team, a German group is working to reintroduce the Northern Bald Ibis, one of the most endangered bird species worldwide. Until the 17th century, the Ibis was native in Central Europe before it became extinct due to high hunting pressure.
Now, the reintroduction efforts are dependent on captive breeding and human-assisted migrations. This is quite a feat, but they are making progress. For more information on their project, check out their website.