This is not the question of the year but one that has puzzled me for some years now so I thought I would poll the experts on this forum. Last weekend when I was cleaning my ducks(plucking alot of work), I notice that 3 of the mallards had fat that was pearl white in color. The fourth mallard had fat that was yellow in color. Is this due to age or diet???. The bird with the yellow colored fat appeared in good health and condition. These birds were taken at Colusa if that makes any difference. I have noticed this before on birds taken from other locations. Like I said, not a burning issue, but I am stuck at work and won't be able to hunt this weekend so what the Hell.