Okay, I don't know what to do. I have 5 eggs under my duck. It's been about 22 days. One egg is turning blue around the middle. I did a search and some people say the egg is bad and will explode. Then I read another thread that someone said half their eggs turn blue. I saw a picture on the web with a duckling hatching from an egg that seemed blueish. Does anyone know????? This is my first hatch. btw--it has no smell & the first time broody is not bothered by it---I mean wouldn't she want to get rid of a bad egg?