Their feathers are all in and we were so wrong. Prim just looked bigger because she was getting her flight feathers earlier. We definitely have a big boy but not the one we thought.
My muscovy ducklet Primrose (AKA: little duck) and what we now believe is a drake let due to huge size difference in the last week, Snow (AKA: President). My daughter was hoping for two females and Snow was originally Snow White lol.