Update: From the Encyclopedia Mythica: Ostara is the personification of the rising sun. In that capacity she is associated with the spring and is considered a fertility goddess. She is the friend of all children and to amuse them she changed her pet bird into a rabbit. This rabbit brought forth brightly coloured eggs, which the Greek goddess gave to children as gifts. From her name and rites the festival of Easter is derived.
If the bird changed into a rabbit "brought forth" eggs, it must have been a female bird changed to a female rabbit. Yes! Yes! The Easter bunny is a female!!!
For all those who celebrate Easter for religious or fun reasons, I am wishing you a sunny, happy day!