My goose has been setting for about three & a half weeks now, I was finally able to get ahold of one of her eggs today. I candled it just now (my first attempt ever), and I dont have a clue what Im seeing or supposed to see. All I can tell was I saw most of the egg was a dark mass and I easily made out the air sac, and it seemed that although I didnt move the egg, the air sac would get smaller then reappear again. Is this because something was moving around? The shell was so thick it was difficult to tell anything. Any ideas?