Pasture-raised non-GMO-fed chicken eggs from Marble Creek Farmstead. Our hens live outdoors and get a mobile coop to sleep in at night, with laying boxes inside and as much fresh air as they like. The sunshine gives them Vitamin D, which gets into your eggs. Their varied diet of grasses, bugs, and their non-GMO feed supplement typically makes a darker yolk color naturally (some confinement houses use supplements to create a darker color yolk). There is also a better omega 3-6 balance than supposedly "free-range" chicken house eggs (which means a tiny door outside in a confinement house). Choose pasture-raised - better for the chicken, and better for you!