I'm old enough to recall when Tums were the size of a dime. Now, they're big enough to use as a coaster under a cocktail. Tums is calcium carbonate and an excellent source of calcium in a pinch. Just break it in half or quarters and shove each into the beak. The hen will swallow just fine. How does she chew, you ask. She doesn't need to because her crop and gizzard do the "chewing".
But do get some of the calcium citrate I suggested. It's far more easily absorbed and digested than calcium carbonate, and your hen will need one of those each day until she appears to be out of the woods regarding reproductive problems.
But do get some of the calcium citrate I suggested. It's far more easily absorbed and digested than calcium carbonate, and your hen will need one of those each day until she appears to be out of the woods regarding reproductive problems.