Oh, I just looked at the brooder pic again. The rocks in the water tray are good, but you may leave a little more space between a few of them so the ducklings can get their entire bill down into it. They will scoop the water. I think I used about 6-8 pebbles around it, with open spaces between some.
And watch that they don't "eat" the wood chips. You can cover them for a few days with a towel, if they seem to want to eat it. Some do, some don't.
And watch that they don't "eat" the wood chips. You can cover them for a few days with a towel, if they seem to want to eat it. Some do, some don't.