I think it goes without saying for those who have seen a chicken peck through a back yard that chickens will most certainly eat fertilizer if they see it just like they peck, at and eat, everything else in the yard. My question is, will organic lawn fertilizer hurt the chicken or contribute something to the egg, and or meat of the bird, that would be undesirable or unhealthy for my family to consume? I need to plant new seed this year and fertilize but I am worried about what it will do to the hens. I can keep them locked up in the run for a while. If I do that, how long should I wait till I let them graze the yard again?