Help me sex my Ancona ducklings I'm desperate

[SaraWolfana]

I desperately want the Ancona duckling on the right to be a boy. Can anyone tell by looking at it? Does the white tail feathers change anything? What about how the tail sticks out more than hers? The left one is a girl. If I can't get a boy out of my batch I'm going to have to purchase a boy from someone here please let me know if you have any Ancona ducklings you can sell me if I can't get a boy..

 

[N F C]

I don't know if the duckling you are asking about is male or female but I was just reading on the Ancona breed focus thread of a breeder you might want to connect with (learycow). See this thread:
https://www.backyardchickens.com/t/1058679/duck-breed-focus-ancona/20#post_16414267

 

[learycow]

Unless you know how to vent sex, you can't determine gender at this age.

Once they are 9-10 weeks you should be able to voice sex them

 

[MelissaZeno]

How hard is it to vent sex duckliings? I am afraid to hurt them. I have a book that makes it look easy but I have not felt confident in trying it.