What are we?

[2102Simm]

I got these ducks from Tractor Supply. Was told I bought 3 Pekin. 2 of the ducks are Pekin but the middle one is not. What is she/he? Also bought what I was told was 3 Khaki Campbell ducks. Is the dark duck pictured a Campbell and can you tell if its and male or female? (First pic) Second pic is a better pic of all ducks for reference. Any help would be appreciated. All ducks are about 5ish weeks old.

 

[KathiQuacks]

The peachy one that was meant to be a Pekin is a Buff Orpington
The other 3 are all Campbells, yes. The darkest is probably a Dark Campbell.
I’m unsure sexing visually right now, but usually female Campbells get lighter, more patterned tails, and males darker, more solid tails.

You could also tell by voice right now. Females will start making a peep-honk sound & get a full, loud quack by 6-8 weeks. Males will keep a raspy peep-peep for a while, not getting their low adult rasp until about 10-12 weeks.