We have a variety of hens. Rock,americana,rhode island,silkies,leg horn,etc.... They are just starting to lay. Out of 14 birdsvwe get 2-4 eggs a day. Some yolks are very pale, almost white. We feed layena and supplement veggie scraps, lawn clipping and flock block. Also they spend about 10 hours or more per week roaming the yard. Other than that they have the coop 6x6 and a 12x12 covered chicken yard. Is the pale yolks because of age or diet? Should i be adding more protein or dark greens?