Are my eggs fertile and is there any chick inside?

The half dark will be your developing eggs. The clears are usually the no hatch eggs but I would give it another week or two & candle again. I`d say you have four that will hatch and the four clears will not.. but give it a lil more time to be sure, then remove clears. It won`t hurt a thing. How to tell if an egg is fertile in general.- You can tell when an egg is fertile beforehand. If you crack one in the skillet and it has a bulls-eye; a white circle with a white dot in the center of the yolk- it is fertile. Good Luck with your hatch!