Glad to hear it's moving along! I'm sorry about your older baby, but I have come to accept that some losses are just going to happen. I hate it, and try to minimize it, but it still happens. Could have been heat, could have been he ate something stupid, could have been an infection. Anything, really.
I'm surprised only two eggs are looking good. I've had 95+% fertility rates all year so far. I wonder if the trip was hard on them? I'm glad the two are doing well though--I sure hope they both hatch--one lonely duckling is sad! Of course, you could probably brood it with some other birds. I had a singleton hatch recently from under a broody (who kicked them out of the nest right at the end and started brooding fresh eggs--rascal), but I was able to put her in with the two I retained from the group I sold to you (I think that's right... I get confused about which hatch is which...). Anyway, they're two weeks apart, and it's super cute to see the little one snuggled up under the other two with just her head sticking out and resting on someone else's back. Also cute to see the older two panting like crazy from the heat because they're determined to be with the little one, and the little one is right under the heat lamp.
Fingers crossed for your hatch this weekend--