While some people on this site get blessed with gigantic "dinosaur" eggs, I've got the opposite problem: One of my Baladi mixed breed hens has taken to laying tiny fairy eggs. Lots of them, something like 10 or 12 over the last 3 weeks. Every now and then she seems to lay a normally sized egg as well, but mostly tiny ones, slightly bigger than my thumbnail. They have a proper shell and regular egg white inside but no yolk. She shares the coop and run with 3 other hens. They are laying normal size eggs. She looks healthy, well fed and behaves as always. She's my oldest hen, about 3 years old, and at the bottom of the pecking order, if that makes a difference. She does keep herself apart from the others and is afraid of them. In the past she used to lay normal sized eggs and has hatched chicks successfully. What could be wrong with her?