Help need to sexing rouen ducks.!

[SocialChicken101]

New to the duck world and need help sexing my 2 rouens. Was told they where ducks but after alot of study I reckon their 2 drakes. I'm fully sure one is a drake as it's head is starting to get green feathers and it's back is starting to get a green tint aswell, but the blue fawn (what I was told, haven't a clue to be honest ) I can't tell. Don't know what age they are either. Im very green to the duck world. Wasn't planning to get any either. Only for a local man was getting rid of all his flock and asked me to take them. Any advice is taken on board and is appreciated. Thanks

 

[fatty and friends]

definitely both drakes

 

[Miss Lydia]

Gorgeous

 

[HollowOfWisps]

Wow I haven't seen any exhibition quality Rouens in awhile, but yes both drakes.

 

[SocialChicken101]

Thanks for the quick replys

 

[SocialChicken101]

Would their be a chance they would start fighting when their matured. They seem to be best friends at the minute. Never leave each other.