Found bird nest in grill. Moved out and waiting for mom to come back. What should I do if mom isn't back?

I carefully moved the nest out of the grill beside the grill so that when the mommy bird comes back to look for it, hopefully, she'll see the nest. I'm in NW Florida, so it's pretty warm now. But I'd hate for the birds to dye if the mother doesn't come back for them. What can I do, anything? will they survive one night without the mom bird? how should I keep them warm? Please help!
Answers:
If the birds are hatched already, they will call their parents when they are hungry and they will come, unless you are too close.
The parents will find them.
If they were not hatched yet, leave the place strictly alone, and the parents may or may not come back; sometimes when a nest with eggs is disturbed, they abandon it. If they do, they will soon build another nest and lay more eggs. Also, if there were unhatched eggs, it is possible the parents aren't sitting on them yet, until they get a full clutch of eggs; or even that the eggs were infertile and they abandoned them after the normal incubation period.
The birds can't smell you, but they may be afraid to approach when they see you near.

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I'm sorry to tell you this, but the mama bird probably smells your scent on the nest, and she won't come back. You really should never touch a nest or baby bird. The mothers are very sensitive to smell and will abandon their young if they don't smell right. I understand there wasn't much you could do though, if the nest was in the grill. You could call your local vet if you want to.but a baby bird without it's mother doesn't stand much of a change. I'm sorry :(

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just let nature take its course.

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You already moved the nest. Should have left it there until later this summer when the babies flew away. You could have gotten rid of the nest then. Just leave them in the nest and do not touch it again. You should have used gloves too. You cannot get human scent on a bird nest or baby birds, the parents will leave them if you do. In your case, maybe they will come back for them, but I doubt it. tonight a cat or something will probably get them...check in the morning. and stay away from them...

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Depending on the age of the nestlings, they may be able to survive the night without a parent. If they have feathers or mostly feathers, they are probably fine. If they are downy or naked with closed eyes, they need their parent for warmth.

As for what to do...
1. Watch the nest...constantly. Parents come back for short periods of time, and you may miss them if you only look out once or twice an hour.
2. If the parents come back, you're in good shape.
3. If the parents don't come back, call a wildlife rehabilitation center. If you can not find one, call a local veterinary clinic, animal control office, or humane society.

If you take the nest down, its contents become your responsibility. Put it in a small box and keep it warm (e.g. put a heating pad on low under the box and a towel over it). Do NOT give the nestlings water. Try to get them to a wildlife facility asap.