I Don't recomend giving your babies a bath a lot until they are older, but ducklings do love to swim, and it is quite good for them too. So if you really must give them a chance to swim about, then fill up a sink full of shallow WARM water and let them have a go.
Ducklings naturally know how to swim, but never leave them unguarded as they can easily tire and could drown. When your ducklings are done having a swim about make sure you have a warm dry towel (Perhaps even a hair dryer, on a cool setting) waiting to meet them. Don't put your duckling back in it's box only half-dry, this can be deadly. Always make sure that you dry off your duckling completly, it should look all fluffy and soft like before you put it into the water, I can't stress enough how bad a damp duckling can be.
Be careful aswell to the positioning of your light, or heat lamp. Sometimes if water, splatterd from your duckling(s) messy drinking hit's the globe it can cause it to blow, sometimes littering your duckling's home with glass. I found I had to keep wiremesh over the top of my duckling's box in order to stop him escaping. This proved useful. By placing my heap lamp ontop (it had long sides, the bare globe wasn't touching the wire) it was close enough to my duckling's "sleeping area" to keep him warm, yet high enough so stray droplets didn't affect it.Your duck will need to eat from a small variety, just like you need to too. Your Duck will need a form of Waterfowl feed, all depending on the sort of duck you have and what you intend to do with it, for instance "layer" Ducks will need different requirements to "meat" ducks and so on. Don't get confused, If your not into specific requirements from your duck it's fairly simple to attain some waterfowl feed from a local feed supplier. Note not many feed suppliers cater for ducks but I'm sure if you politely asked them to bring some in they would do. For all those who ARE wanting specific requirments, check my links page to find out the perfect feed ratio.
Some favorite foods of ducks are:
* Insects- can't get enough of those slugs, snails, grasshoppers etc..
* Pond Plants- yeah, you know the really expensive ones that have been reduced to a muddy stump?
* Left over veggie scraps- Potato & Apple skins galore! (no stones)
If you feel like treating your ducks, then any of these things will really please them!
Ducks usually when out "free Ranging" in the yard or farm forage for tasty bugs like snails etc.. A good thing thats fun for all, Is to hang a low-watt bulb in the middle of the yard at night so all the moths and flying insects get attracted to it, then watch your duck's antiques and they have a delicious midnight feast.
Pond plants. There are VERY few pond plants that ducks wont eat, some of these can be obtained from the "links" section, And don't think getting plants that grow right on the bottom of the pond will stop them, you will be surprised where those ducks can get too!
Veggie Scraps are a nice snack for your ducks, Everything thats "veggie/fruity" (apart from large stones and pits) will do your ducks good.
Things not to feed your ducks, is bread, yes its true, Bread because it is made from yeast and yeast is a type of fungi and fungi is basically a mould, and a huge killer in ducks is, you've guessed it, mould. sure a little bit now and then is fine, but bread alone or included as a main part in a meal isn't a good idea at all. Another one not to feed your ducks is solely dogfood or catfood, yes some people feed their ducks petfoods which is wayyyyyy to high in proteins for a duck, so don't even think about it. If your duck is low on protiens feed it bugs, see above with the moth light idea. Medicated Chicken food is also a killer in ducklings and not healthy at all for your duck, so avoid them. (just print this out and it should get you started)