What sex are my ducklings?

[LMEggs]

Well here they are any thoughts on gender ??

Duckling #1 non crested

Heres a tail view

Heres duckling #2 crested

Tail view #2

Thanks!

 

[Wifezilla]

Here is a guide to sexing ducks I have been working on. I think the easiest way to tell at this point is by QUACK. Read that section and then go to the sound file links.
https://www.backyardchickens.com/forum/viewtopic.php?id=181147