This is my first time raising ducks (I’ve had chickens for past 2 years) and I bought them at TSC when they were 4 days old. One I know is a pekin, but the other two I’m not sure. The pics are when I brought them home, then a little older and now at 7 weeks. One of them was all brown with no lines around the eyes and the other has one line which has completely disappeared. Any thoughts on breed?