Genders for Pekin Ducklings and Olive Egger Chicks

[ByFaithFarm]

I have two pekin ducklings 3-4 weeks old and two Olive-leggers (description of the seller), 5-6 weeks. Any gender clues? Thanks!
S

 

[sourland]

It's too early on the ducklings and probably too early on the chicks, but I'll go out on a limb and guess that both are pullets.

 

[ByFaithFarm]

Thanks sourland!

 

[ByFaithFarm]

Here are some noted differences between them if it might help any of you with your guesses:

The ducks-one has a more upright carriage, raspier peep and is more social
The other has a bigger “chest” area, walks more horizontally and has a clearer peeping sound. It is also a bit more nervous acting.

The chicks-one is significantly bigger (supposed to be same hatch/type), less fuzz, more real feathers, bigger/thicker feet and legs, definitely more tail.
The other smaller and “rounder,” more fluff.

I don’t see a big difference in combs/waddles....