I'm sorry to have been so long responding. We lost two of our new ducklings Friday night, and my nerves have been really frayed for the past couple of days.
The baby birds were gone on Saturday morning, not in the nest, anywhere around on the ground. Nothing. There was no sign of any kind of struggle, nothing like broken or bent branches. The seeds I had put in for them didn't seem to have been touched by them or any other bird. The millet showed some signs of nibbling, but it had looked that way for a couple of days. I can't say it was any more nibbled on Saturday morning than it was on Friday.
Since they seemed fine when I last fed them on Friday night, I'm trying to make myself believe they just flew away, especially after going through the duck thing at the same time. I could see one falling out of the nest and being taken away by a predator, but not both.
I don't mean to be depressing, but trying to make myself believe they left of their own accord doesn't mean I actually do believe it. Maybe I'm just still so upset over the ducklings that it's causing me to think the worst about the birdlings. The larger one had been hopping around on branches then going back to the nest in the last couple of days, but I never saw the smaller one get farther than perching on the edge of the nest. Maybe it did the same hopping on the branches and I didn't see it, but that one, at least that one, didn't seem ready to venture out on its own.
I'm going to keep trying to make myself believe they're somewhere around here in a tree or hedge and scoping out places to make their own nests. I know that, every time I see a little brown bird at one of our feeders, I'm going to wonder (and hope) that it's one of them.
Thanks so much to all of you.