A Yolk You Can Lift: Hen Houses and Egg Tests
It's past 9 pm and Cho keeps going through his poultry slides: soil floors and dust baths, Korea's pesticide eggs, the hen that roosts highest, broody cages, dark laying boxes and rice hulls. He shows home-made feed, pig feed from broiler litter, and how to test an egg: lift the yolk, look for three layers, pull it with a toothpick. Then blood spots, red paper against pecking, dissected birds and darker yolks from purple sweet potato.
Found On a soil floor the droppings break down and the hens dust-bathe