Kerri Wolter and colleagues just published a short note about a Cape Vulture (Gyps coprotheres) that was released in Namibia in 2005 and now obviously returned to South Africa … Have a look at the paper here:
Wolter K, Neser W, Diekmann M, Verdoorn G. (2014) South African Cape Vulture released in Namibia in 2005 is back in South Africa. SAfring News 43: 21-22