Eastern Comma butterfly. First of the 2014 season for me.
Not too far away, there's snow on the ground.
Frequently seen with the Mourning Cloak butterfly, these tough little critters over-Winter by hibernating under tree bark until we get a warm-ish (50+F) windless and sunny day... then they warm their wings in a quiet sunny spot. They do not nectar. Instead, they feed on tree sap... a sure sign of Spring.