I have three female ducks all at laying age. Two of my ducks are blue runners and the third is a Buff. The Buff duck appears to be taking on the role of a male! She is not laying, playing the male part of their daily mating games, and chasing off/defending their "territory " around our pond. Am I correct in guessing that this is normal behavior when a male is not present? If so, will she ever lay eggs? Any thoughts or experience with this would be helpful.