By Todd Wilkinson, National Geographic

Maybe it’s a baby robin that falls out of a nest in the backyard, or perhaps twin deer fawns left orphaned after their mother gets struck by a car or eaten by wolves, or perchance a bald eagle, behaving strangely, staggering on the ground and unable to fly.

When wild animals appear to be in distress, should human beings intervene to rescue them or is it better to back off and let nature take its course?

This existential question is being debated again following a recent incident in Yellowstone National Park involving a bison that raised eyebrows and attracted international media attention.

Earlier in May, a Canadian tourist captured a wild bison calf with his bare hands and loaded it into his SUV. The man, Shamash Kassam, said he found the animal alone and shivering along the roadside in Yellowstone’s wildlife-rich Lamar Valley. Once he turned it over to rangers, park biologists made several attempts to reunite the youngster with its herd but when the calf was rejected, they euthanized it.

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