I have Muscovy eggs in the bator and today is day 5. I just went to turn them and just because I am curious and impatient I quickly candled one of the eggs for the first time. I am 80% sure I saw veins in or around or on the yoke. I looked at a second egg to be sure and saw the same thing. Am I suppose to be able to see this on day 5? Especially with Muscovies who take 35 days to hatch? Is this a good sign or something I should be worried about because it is so early? Thanks in advance for any advice.