Mummy duck went off to have a fight with one of the boys on the pond who was coming too close to her babies. Hee they are all watching and waiting for her to come back.
Can you see there is one duckling which has a brown head and not yellow? I am assuming he is a male and the other female but I may be wrong. I will check it out with Denise.
Ah, and after I go and make my comment, I see this shot and your text. Hopefully we get to see them grow and see how much this outlier changes relative to the others.