Thank you very much! It's a strange feeling "expecting".
In the begining I was marking the eggs with a "x" to see if they were being turned, but now I write the date they were laid on the egg so I know when to candle them and to see if they are being turned. Also (last time I checked) there were no more Muscovy eggs in the nest so they must think they have enough eggs and started clutching, they've been sitting on the eggs (fake and theirs which started this thread as I thought their eggs were fertile, turns out they were just rotten) for a couple months now but never the less. Now I've managed to take out all of the fake eggs and replaced them with the fertile Rouen eggs.
When I first started candling the eggs I would take them inside and candle them in the pantry, but the ducks started getting defensive knowing I would take their eggs and going from nest temp to an air-conned house would be straining on the embreyo, now I just wait until it's dark and I candle them right in front of the duck, normally when I hold the egg out like I do when candling they try to move it back under themselves, now they just stare, perhaps they are curious as to what the egg looks like when it's under the torch? Either way my reputation has improved better now I don't take the eggs.
Thank you to everyone on this site. I'm glad I could throw out the rotten eggs before they potentially exploded. The reply's on this thread have certainly prevoked research which have helped me identify rotten, dead, infected and healthy embreyo. So thank you everyone...
