Sorry, I've never had ducks before. I'm guessing a week old. The bath was warm and we wrapped them in towels right after and then they were under the lamp for a few hours before it was turned off.
Yesterday I found 3 ducklings that fell into a sewer. The fire department came to get them out and in the process the momma duck left them. We tried to find her after they were out but couldn't so I took the ducklings in. I got a big Rubbermaid tote, cut the middle of the lid out and zip tied...