They see each other around the bird feeder all winter long, but one red-letter day in late January they SEE each other. He offers her a sunflower seed (while she's standing in them) and she accepts. As February Marches into April, the courtship quickens, and by the time the redbud's in bloom, love is too. She weaves some leaves and twigs together, and just in time. As summer falls into winter, make sure you lay in enough sunflower seeds - an extra bag this year.