My family currently has an adult flock of 2 male rouens and 1 female pekin. I recently rescued a female baby mallard out of a gas station parking lot. I have been keeping her in the house to stay warm and separated since she is still a duckling. We wanted to find another duck for her so she would have a companion before introducing her to our existing flock but we have not been able to match any up in size. When the duckling is big enough will it be safe to indroduce her to the flock alone? Any advice on how to get our existing flock used to her?