Pekin Banty Sexing!

[Dacombe]

Hello,
I have here eight little Pekins, of which I'm fairly certain four are hens and four are cocks. I have some people interested in having a few of them, but obviously don't want to sell them 'hens' that turn out to be boys! Any second opinions would be much appreciated. The oldest three were hatched 17th May, the other five on the 20th May, so they're all about five weeks old.
These are the four I think are hens:

And these four are the candidates for cocks. I know the pictures are not the best. The just don't keep still. These four all look like the father, who is a white Columbian, if that makes a difference, whereas the hen mothers (they all laid eggs under each-other) are black with gold necks, cream, and columbian.

Close ups of the supposed "cocks" with their little party hats:

And here are close-ups of the 'hens':

Sorry to trouble you guys with this. Let me know what you think!

 

[MysteryChicken]

All of them look like boys to me.

 

[Dacombe]

All of them look like boys to me.

No way! Even the four in the first two pictures? Would be just my luck to hatch out eight cockerels. I haved added close-ups of the ones I am hoping are hens...

 

[FeatherLace]

If I were to guess I'd say you were right with 4 pullets and 4 cockrels, but im not familiar with these breeds and am not sure if they are color sexed. I know that my Lakenvelder had a much more defined comb at 5 weeks than that.

 

[Painted Calls]

Those wattles have an awful lot of red for 5 weeks. I too believe the last 4 are slow developing cockerels. If you do have a pullet, it would maybe be the very last one or two pictured. Possibly last three.

Are the last 4 the younger chicks? I would wait on those and post updated pics in 2 weeks. Then we should know for certain.

 

[Dacombe]

Are the last 4 the younger chicks? I would wait on those and post updated pics in 2 weeks. Then we should know for certain.

Two of the last four are actually the oldest ones (the black and the grey ones)!

 

[Painted Calls]

It's possible that they are pullets and are flushed from being caught. Combs look good for pullets. It's the color in the wattles that stand out. Are they that red in person? It could be lighting in the pictures.

 

[Dacombe]

It's possible that they are pullets and are flushed from being caught. Combs look good for pullets. It's the color in the wattles that stand out. Are they that red in person? It could be lighting in the pictures.

It might be the fact that the wattles are in shadow. They did give me the run-around as well (you can see they're panting in the close-ups). In person, observing them at rest, they appear almost yellow-y, with a little bit of pink.