Just found a rescue that had three ducklings and we decided to take all three. This will be my first set of ducklings of my own. We are pretty sure two of them are 3 week old Khaki Campbell ducklings and we have no idea what the third 2 week old little one is. He is all brown. We got them in a 90 gallon rubbermaid tote and large flake pine shavings. We placed a reptile heating rock with a receiving blanket on top. They are all snuggled up and seem to be doing great. If anyone could help identify what breed this little brown guy is I would appreciate it. Also, when will I be able to tell what sex the Khaki ducklings are. Thanks!