My hens dont get to free range like they did before the snow . So their eating mostly feed. Their eggs change a bit. the yolks werent as dark. Ive been giving them alfalfa pellets soaked in warm water. Thats darkened up the yolks a bit, but what Im wondering is are the eggs their laying now as healthy as the summer eggs. If not what can I do to make them healthier. I read that flax seed is good for that or fish oil. How much do I give