I was learning to sex my ducklings (I’m a new duckling momma). I bought a total of 6 ducklings from TS. So far I definitely know that I have 2 male mallards/Rouens and two female. I keep checking lol. I also purchased what seems to be 2 female Pekin/runner. I’m worried about the ratio of male/female. My husband would like to wait to see how they act together and I think that why they are still little to add at least two more females. What do I do?? Wait or make sure I have enough females?