Can anyone ID these ducklings?

[renren]

got these guys from rural king—any way to id what breed and if male or female? thanks!

 

[fatty and friends]

bad picture, but if they are brown khaki campbell and if they are black they are cayuga.

waaay too young to tell gender yet

 

[Percipen]

They look like little cayugas to me. But like fatty and friends said, its hard to tell from the pic