Is this really necessary? I'll bet Phil doesn't give a toss when winter will be over. He just wants to snooze until then. The ones who seem to care are all the overdressed dimbulbs who wake him up.
What's the matter with them--don't they have their own shadows, which they can either see or not? Someone needs to report them to PETA and the ASPCA.
Just my humble opinion. I could be wrong, but I doubt it.