Rcom suggested Eggs Hatching Tips

Samer Kurait, an author and a researcher in the health and wellness area recommends  consuming only free range fertilized eggs by hens raised with roasters that eat variety of foods and insects especially grass and get ample exposure to sun, exercise and fresh air. Select eggs that are from healthy hens Use eggs that are laid within a week. The fresher, the better. Use eggs that had minimal sun-rays exposures. Use eggs that have been stored at about 10~16°C of temperature, and in an environment of 75% of humidity. Avoid dirty and malformed eggs. Not all eggs are fertile. Chicken can lay eggs without a roaster and such eggs are what typically sold at grocery stores. These eggs can not hatch. The best fertilized eggs are laid by free range hens that are raised with roasters. Avoid hatching cracked eggs since that would invite bacteria. If you have a cracked egg that you want to try to hatch, first clean it with cotton damped in alcohol. Dry the egg. Then apply an adhesive tape just on the broken shell area and place the egg in the incubator.