Charby, my dad's honeybee hives needed supplemental food last year, too.
It wasn't even that harsh a winter, compared to this year.
He has them to pollinate his flower and vegetable gardens, as well as his fruit tree orchard.
Dunno why they got lazy, save for some variation of colony collapse disorder, but I sent him this link to try:
http://www.peakprosperity.com/blog/honey-bee-candy-winter-feeding/70069