For chicks and ducklings from one day old, we've used a little hanging nipple/dripper waterer for years. For compactness, I used a little round plastic apple juice bottle. I drilled a hole in the cap, about 10 mm or 3/8" diameter, screwed in the nipple, and poked a tiny pinhole in the bottom of the bottle - essential to let air in. You can get technical by tapping the hole properly, which I do for an adult bird waterer with nipples screwed into PVC pipe, but for the soft plastic of a bottle lid, the nipple threads itself and seals fine. The water pressure is only about 0.2 PSI, so if you're reasonably careful, it won't leak.
Then I made a support out of a mason jar screw-on ring and wire, and the assembly hangs from the wire mesh top of our brooder box. There are lots of ways to do it. We've had little or no problem with leakage, but nipples sometimes need to be replaced after a few years. There's no end of ways it can be done. The water is yellow because of the vitamin/electrolyte stuff. Refilling it takes about two minutes.
As easterbun said, you don't need to worry about training chicks or ducklings. You might speed up the process by showing them the water with your fingertip - or you can wait five minutes (at most) for the first bird to discover the nipple. The others pick up on it instantly. We used to start them with an open water dish, but now we skip that step. The nipple method is sooo much cleaner. Once you try it, you'll never go back to an open fount-type waterer. We use nipples from Amazon at well under $1 each, like these:
https://www.amazon.com/OOOUSE-Nipple-Drinker-Chicken-Poultry/dp/B00CIJENP4/ref=sr_1_10?crid=1670L3BPJCLBJ&dchild=1&keywords=poultry+water+nipples&qid=1586973435&s=lawn-garden&sprefix=poultry+water+n,lawngarden,269&sr=1-10