Muscovy Ducklings-Male or Female?

[puddlestheduck]

Hi,
I have two Muscovy ducklings that are both 4 weeks old. I've researched on how to tell the genders apart but they seem to be developing at the same rate so I have nothing to compare them to. They look like they have big legs so I'm thinking drakes but not sure. Thanks for any help!

I have more photos if needed.

--Little edit: I forgot to add that they have been trilling a lot. I haven't heard any hissing or quacks yet.

 

[Silvia2234]

The duck hens will have more of a sharp sounding voice compared to the males. The females are nowhere close to the size of the drakes. The drakes will be larger.

 

[puddlestheduck]

Just a little update that their caruncles are beginning to grow in, more so on the darker one.