Another sign of global warming? Bears late hibernating?

 We live near a wildlife corridor high in the Rocky Mountains, and a bear has been leaving its prints around our property for the past two weeks. It is nearly the end of December, and it is way past the time (around October) for him to be hibernating. Concerned he may be sick or starving, I called our state wildlife office in our county. No, there are reports of bears late hibernating because we have had a very mild winter so far, they told me Their hibernating is triggered by cold weather, and due to a run of warmer-than-usual fall weather, it is not unusual to see bears hibernating later or even or for a shorter duration. We are seeing the effects of global warming, I conclude. We have already lost forests of lodgepole pines due to a beetle infestation because winters are no longer cold enough to kill them each season. I have been a full and part-time resident of our home in the Winter Park/Fraser area for 50 years. In our early years, below zero F weather, even 30 degrees F below 0 ( O F is minus -17 C ) was not unusual, but even a few degrees below 0 F are fewer and far between.