When mine have egg issues, I give them one each of my calcium and d pills. Then I break out the OB lube, squirt some in the vent and check for stuck eggs. If no egg is present, and they have prolapsed, I apply prep h and place them in a place away from other birds. If I find and egg, I will give them a bath or steam the bathroom and see if they can pass it. The calcium seems to help them pass the egg, but I'm not sure why.