1. I have 2 mystery ducks which had white feathers at first but overtime, they have brown feathers on their breast and grey feathers on their wings, could this be because they hang out with the Indian Runners and Anconas too much? or is it something else? 2. My Anconas have white,black and green feathers, are they Tri-coloured? Extra quick question: Can Indian Runners lay Blue eggs?