This is the calcium citrate that I use for my ladies and it is already in powder form so easy breezy! My pekins are pets and are only here to be healthy happy duckies not raised for meat birds. I feed mine a healthy duck food from a local farmers co-op and supplement with Nutritional Yeast to keep them nice and healthy while they are growing so fast. They of course get mealworms, fruits and veggies. Yep even kale! And mine are perfectly healthy and happy animals. Have fun with yours!