I have about 2 weeks left on the first egg, a week more on the other. I got curious since I didn't check fertility until the 3 rd egg, so I took out the first egg and placed on the counter and watched....... small rocking.... I focused my eyes... still....... then a big jump in the egg and hard rocking. YEAH!!!! Then it did it again. With a grin I put it back in the bator..... Hope all goes well. Right now it is still about 97 degrees and running 33-35 humidity.