Identification of breed help needed

[DukesDucks]

I already received some great help identifying ducks at a animal rescue place where I started volunteering. One duck had a variety of suggestions. I am adding better pictures of it this time. Thanks for any ideas.

 

[Lacy Duckwing]

Swedish. Looks almost like the Swedish Hybrids of Moosehead Lake that I study, but not enough white on the chest. Do they fly? If so, they might be the hybrids. Or did they not come from the wild?

 

[JacinLarkwell]

Kinda looks like my black Swedish did, but larger, more iridescent and less white than mine ever had

 

[DukesDucks]

Forgot to ask if there are any guesses as to sex. Most of the ducks are in 2 runs that have no top netting. I'm new at this place but I have never seen any of them flying. I'll have to ask if they clip flight feathers although I doubt they do so.

 

[HollowOfWisps]

It looks bumpy where the bill meets the head almost like small black caruncles? Am I seeing that right? If so definitely a Muscovy mule possible with some swedish in there. How old are they? I see no tail curl and if older female.

 

[Lacy Duckwing]

Forgot to ask if there are any guesses as to sex. Most of the ducks are in 2 runs that have no top netting. I'm new at this place but I have never seen any of them flying. I'll have to ask if they clip flight feathers although I doubt they do so.

They look female to me. But if they're something like a Gold Star Hybrid, they're males. Majority of drakes have a curl on the top of the tail.