Hello, I'm going in to a local feed store and getting my first set of ducklings in a few days...I was just curious for signs to look for (color wise) to help determine the sex of the birds before I bring them home. I know with other breeds of ducklings you can look at the lengths of the flight wings to help determine gender and darker/ lighter colors are Different gender characteristics. Since theese are my first ducklings I do not think I'm ready to even try vent sexing. I am looking to purchase 2 buffs and 2 blue Swedish and would like 1 male and 1 female of each....thank you!!