I picked up 4 Khacki Campbell ducklings yesterday. They told me there was no way to tell make from female, but online there seems to be different thoughts on ways to do this. One thing I read said dark bills and colors are females light are male- If that is the case I have 1 that is MUCH lighter then the rest. Second thing I read said that if they have a ring around their neck then they are male- If this one is true then I have 3 with rings on their necks- but only one is light- the others are all dark. Third thing I read was voices- right now they are still peeping- I haven't heard anything that sounds "ducky" at all yet. These little ones are a week old. Are either of the first two ways true? If so and I have 3 males to 1 female then I better go grab some more girls!