Studies show relocating wildlife to unfamiliar territory is almost always fatal to that animal. Wild animals learn to survive and find food and shelter in the home range where they grew up in. Without landscape familiarity or caches of food to tide them over during times of scarcity, they soon perish.
Immature and dependant offspring may be left behind and orphaned if their parents are relocated. Wildlife Rehabilitators work hard to give orphaned wildlife in their care the best chance at survival post release, but wild babies always have the best chance at success when raised by their wild parents.
In Ontario it is illegal to relocate wildlife further than 1km from the point of its capture.