I have recently been hatching some fertile duck eggs with my broody hen and although the first four of five have hatched I found that one has been left and is quite cold although it is still making quite a lot of noise and should be hatching about now. I tried to get my broody to sit on it but she has completely rejected it and isn't sitting on the ducklings despite some of them being only less than a day old. For the moment I have been using a homemade water bottle to keep it warm however this can only be temporary as it is leaking and quite impractical. Does anyone have any advice on what to do? Any advice would be greatly appreciated.