Hi, I woke up to a bit of bad news this morning. My second duck this week was missing. I am working on identifying the predator and keeping it out of my yard, but I am also growing concerned about the future. My two remaining ducks are a drake and a hen. I fear that it won't be healthy for her to be his only mate. So, I'm assuming I'll be finding myself raising to female ducklings soon, and I had a few questions about how to introduce them to the flock. Should I wait until a certain age? What time can they be left alone with each other? Could the new ducks be hostile towards the current ones? Any advice is helpful.