The Bees are out...and it's March

Photo credit: AskNature.org

As I sit here in my backyard on this record breaking warm day in March, I am buzzed by bees and wasps flying near my head.  While this is a startling occasion at any time, I wondered how the bees will fare when this unseasonably warm weather cools to the normally chilly spring that we normally have.  We will still have a frost, right?  And thinking about it, how do bees survive Chicago winters at all?  And is there anything we can learn from them?