so I ordered 6 call ducklings along with some others from purely poultry. The calls shipped a day after the others and when they arrived one was dead. A couple minutes after, another one passed away and another that afternoon. This afternoon I lost another and I only have two left. What's going on? I feed them nature pro game bird starter and they are seperated from the bigger birds. Before dying they start falling over and then act like the can't breath before passing away. Please help! EDIT: I put my crested Peking duckling with them for warmth. She hasn't been picking at them and lets them crawl all over her so I think they'll be alright.