Hey,so I know I haven't been on here in forever but I really need some help.
Last night two of my six ducks got attacked. We are pretty sure the guy next door's dog or outside cat got them,cause we've had them outside all summer and nothing got them,then last night two disappeared and there was a trail of feathers leading across the street

and this wouldn't be the first time his animals have gotten our livestock.
Anyways,
So the one female had a nest of eggs which we are sure were fertilized,because when they kicked out the bad eggs from the nest we saw blood in them. So this morning I went out and brought them in,put them with a heat lamp,warm towel,sometimes heating pad (but not right on the eggs) to keep them warm till we went into town and got an Incubator a little while later. So we got home,and I set them all up in there and they have been doing good so far.
I know there is a good chance they won't make it,since they went a few chill hours without the mommy being on top of them to keep them warm..But,I looked up online and a few people have had eggs make it even though they went without the mom for a little while,so i thought it was worth a try.. it would seem so heartless to not even try.
I really want to candle them to see how they are doing,but I'm going to wait till tomorrow to do that since its late.
My question is:
If you see dark splotches from the outside,that means it is dead, right?
two or three have those darker splotches..I wasn't sure if they were just different cause they were older,or cause they are bad.
I wasn't sure if that was just you seeing them grow inside or not,I doubt that.
But then I looked at our other duck's nest,and all her eggs are darker,but she is a brown duck,so that could make sense.
I just want to make sure before I toss the dark ones,I tried looking it up online but didn't get very far so I'm hoping some of you may know.
Also,I was wondering... Will I see any of the inside from the outside of the egg without the candling?
Thanks!