I've noticed that most people here seem to use oyster shell for their hens calcium. However, I have heard that if you ever plan on processing your birds later, the oyster shell can make them have a bit of a fishy taste. Has anyone else noticed this? Now, my girls are about 18 weeks right now, so I figure I should start offering them some calcium in case they start laying soon. I don't know if I will be processing them later or not, but I would like to leave that option open by not feeding oyster shell so they don't taste fishy. What are some other good alternatives to oyster shells? I have heard that some people feed back the eggshells all crushed up, and I will probably try that, but I probably won't be able to save all the eggshells as I will be selling a lot of the eggs. What are some other good (and easy) sources of calcium(other than in veggies)? Is there anything similar to oyster shells that is not fish based?