Noticed on one of my new layers (White Leghorn) she has laid a couple eggs with wavy/wrinked shells.. others are fine. Causes? Diet? Also I noticed in breaking open a few of my eggs (all from new layers) some of them have a brown speck (not bright red blood spot) in the contents usually on the yolk area. It is flat and easily removed. What causes this. My chickens are on a diet of layer pellets and scratch grains with a few b.o.s.s thrown in once ina while.