Yellowstone euthanizes baby bison after human interference.

A man who picked up a bison calf in Yellowstone National Park caused it to be shunned by its herd, prompting park officials to kill the animal rather than allow it to be a hazard to visitors. Bison must be quarantined before being sent to conservation herds outside the park, but a bison calf abandoned and unable to care for itself is not a good candidate for quarantine. Human interference with young wildlife can cause animals to shun their offspring. Park officials are investigating the bison calf incident.