I ran and picked up stuff for little one and he/she was running around like normal when I got in but I went ahead and gave the special water to the little thing. I took them outside in the afternoon since it was hot and he/she was eating grass and dirt and drinking on his/her own. They all curled up together last night as usual and fell asleep. I woke up this morning and the poor thing didn't make it, I definitely wasn't expecting this since everything seemed fine when I went to bed. They are in pine shavings with a heat lamp at one end so if they get cold/hot they can move. I give them crumbles like I give the chicks (it's not medicated) and it's mainly me that handles them since they're so young but the boys hold them a little. I change their bedding daily, I think they like their pine shavings wet but I try to keep it dry and constantly clean out poo. Their water is changed several times a day since they like spitting the food in there. I did notice the others were growing faster, this one has always moved slower and was much calmer. He/she was a crested, are they more delicate? Should I be worried about the other little one that's a crested? It is acting fine, runs faster than the others and eats/drinks a lot. I've never had ducks and started with chickens less than a year ago, I love birds more than I would've ever imagined and wish I would have done this years ago!