First, I am not asking whether I should feed garden lime directly to my hens - I know that would be bad. What I am wondering is whether applying garden lime to my lawn would eventually provide a calcium source for my hens. We keep them in a chicken tractor and move it every 3-4 days. While the lawn is green they really enjoy eating the greenery. I know the lime would be good for the lawn in general, but if it has another benefit - I might actually consider liming the lawn worthwhile. I know the lawn has not recieved lime in over 5 years (since I moved in).