Determining sex of a duckling

[Lobzi]

Two Indian Runners just hatched. They came from a blue mating pair and my hatchlings, one is blue-fawn and the other blue like its parents. I was surprised at the fawn one but then Im just learning about ducks and their coloring. Regarding their sex, the fawn colored one is a lot larger than the blue one. Does their size at hatch indicate sex? I read something about head size is larger in the female than male but not sure if that holds true for hatchlings.
Here are my two


I love them to death already. They have so much personality and seem so happy when I talk to them and stick my head in the brooder. They seem to love to be touched and held. I hope that doesnt change as the age. On the other hand, they do not cry or call for me when I cannot be there with them like baby chick and quail....perfect pets!

 

[marcelineduckie]

Probably have to wait a little while to find out here's a picture of my baby runner 4 days old maybe to use as a head comparison when they reach that old? Not sure about the head size sexing method only the quack and obviously egg laying haha

I forgot to add that she's a girl

 

[Lobzi]

That is a cute picture. Is yours a boy or girl? Looks like a big head in comparison to the body but I think it is just the camera angle.

 

[marcelineduckie]

That is a cute picture.  Is yours a boy or girl?  Looks like a big head in comparison to the body but I think it is just the camera angle.

she's a girl could be the camera angle she stands like a penguin haha leans in a little when I'm taking pictures I have another picture of her on my page and in a thread I made called indian runner week by week

 

[Lobzi]

More pics from today. The fawn colored one is a lot larger than the blue one.