Poking their noses up.  It actually is remarkable how tough some plants are.  Spring bulbs, which only have a few optimal months to grow, flower, set seed, and store energy, have to balance too late with too cold.  Some daffodils, crocus, and snowdrops have thought about starting up, especially in areas with strong south exposure.  They are currently very chilly indeed.  And very solidly frozen.  Still, even in the middle of winter there are signs of spring.