No, the dark spot is blood.
First you drag the big duck away from its original spot, then click the smaller duck. Hope I helped.
You're kidding right? Well, for starters, if it's not moving, stiff, and lays in the same spot for a few days, it's more than likely dead...and if it's stinky and has maggots on it, time to bury it.
(Candling hold the egg up to a light and look through it, if it is fertile there will be a dark spot.) No, sorry, although the above answer seems to be on more than one copy of this question, it's wrong. You can't tell if an egg is fertile that way unless it has been incubated. If incubated, you will probably see red veins first. Incubated duck eggs are very active inside. You should see some movement in the embryo. At the earliest, I tend to think I'm seeing a beating heart, but it might be something else moving around. If all you are seeing is a dark spot with no happy veining or movement, that's not a good sign. Most of the time that's either a dead embryo or a bit of rot. You might want to look up some egg candling info. 10 days into incubation is usually the earliest I check, but I have peaked earlier now and again. If you haven't been incubating the egg, the only way to tell if it is fertile is to crack it open. One side will have a white spot. If the wrong side is up, carefully turn the yolk with a spoon. If the white spot looks more like a bulls-eye, the egg is fertile. If it is just a single white spot with no ring around it, it is infertile. Of course, at that point, you'll be making an omelet instead of hatching ducklings.
These are called blood spots and can appear in either the white (albumen) or the yolk. This happens when a small blood vessel breaks in the birds oviduct and deposits a trace amount of blood onto the forming egg prior to the formation of the shell. This tiny spot of blood is not harmful and will disappear when cooking the egg. Most restaurants and home cooks remove this blood spot simply because it is unpleasing to look at but it will not harm you.
The tried and true method is to hold the egg up in front of a bright light; a chick inside would appear as a dark spot inside the egg. Otherwise, by looking at it, you cannot tell. If you weighed it over time, the egg would become lighter if a chick were developing inside it.
The dark spot in the nucleus is called the nucleolus
The dark spot in the nucleus is called the nucleolus
The nucleolus.
Nucleolus
Spot-billed Duck was created in 1781.
The nucleolus
The Great Dark Spot on Neptune, similar to Jupiter's Great Red Spot, is a massive storm system on the planet's surface. It is estimated to be about the size of Earth. Therefore, you could fit approximately one Earth inside Neptune's dark spot.
nucleolus.
Nucleolus
After about 2 days shine a torch or a candle light in a dark room above the egg, if you see a red spot it is likely alive, after 11 days do the same thing and there should be viens that you should be able to see. Go to http://www.minkhollow.ca/HatchingProgram/Candling/index.html I found this site very useful.
Yes it does. The spot is called 'The Great Dark Spot'
I believe that would be the nucleolus.