I think I found the reason why the broodies crack the eggs. I am not sure, so I hope you guys would tell me is that possible.
My grandma's dog died, so she had a lot of leftover bread so she gave it to chickens. They were eating it every day for about two weeks and then she set the broodies. I think that they were eating bread instead of their regular feed because they like it more, and that it made the egg shells thiner and weaker.
My grandma's dog died, so she had a lot of leftover bread so she gave it to chickens. They were eating it every day for about two weeks and then she set the broodies. I think that they were eating bread instead of their regular feed because they like it more, and that it made the egg shells thiner and weaker.