Congratulations on the baby woodie!! I love them, they are wirey little critters!! Things to be ware of..........they can climb, and they do it very well, so make sure you have some sort of top on your brooder if it is made of wood, you shouldnt have much of a problem if your using a tall tote. Dont put the ducklings in a full tub of water, only make it deep enough that they can touch bottom and make the water warm, after a few minutes of that each day they will start to use their oil glands and will be able to float on their own, but right now they may look like drowned rats as they dont have any oil on their feathers to keep them bouyant.
As for feeding, put paper towel down over shavings on the brooder floor, this will create somewhat of an uneven surface, sprinkle flock raiser or un-medicated chick starter, or turkey starter on the floor of the brooder, everytime they move around the food will move also and attract them to eating it, you can also sprinkle some of the food on their backs and the other ducklings will pick it off. You can also make a bit of a paste out of the crumbled food and smear it about neck high on the side of the brooder wall here and there, they will pick it off. As well as all this, keep a jar lid or what ever full of food. I have never had any problems getting woodies to feed.
Before you know it you will have a huge mess going on in your brooder!!LOL
Goodluck and keep us updated!!...............Jason
PS- Baby crickets work very well as a chaser food!!