That is terrible, poor things. Do polar bears actually hibernate? (Calling on brebis!!!) I am woefully ignorant of their habits - I was under the impression that they didn't, as I thought a normal winter was a happy, fat-tummy time for them. This is also the case for Northern human beings, as it was easier for them to travel and go out on the land to hunt and fish. Summer also brought a lot of much-needed vitamins from shortlived berries and other plants, but I believe the spring could be a time of hunger.
I bought a postage stamp (this is getting rare) to send a birthday card to overseas friend; no surprise that the overseas stamp is a polar bear. Friend is well aware of the Harperites' ecocidal government.