Gender guesses?

[Wrex]

I have some 7 week old crossbreed bantams, most of them are really easy to sex now but a couple still have me guessing. Dad is Gold Laced Wyandotte x BBR Araucana (UK tailed variety). The possible mothers are Red sex link, Silver duckwing Welsummer, Gold laced Wyandotte, Silver laced barnevelder or possibly Chamois pencilled Friesian fowl. The first one seems to have some blue in the tail feathers, I'm not sure how this is even possible? Any ideas please? Here is no. 1:

 

[Wrex]

The second one has a very strange comb. It's very flat, with three sections and fluff/feather between:

 

[Frazzemrat1]

The last one is definitely a cockerel. The others, are probably cockerels.

 

[Frazzemrat1]

And I just noticed your name..... Are you named after a certain krogan?

 

[Rhodebar Lover]

Both are cockerels!

 

[Wrex]

The last one is definitely a cockerel. The others, are probably cockerels.

Thanks- there are only 2 birds, with multiple pics of each. The second one is very similar to it's sibling which is much more cockrel-ish, so I guess I was holding out some hope because of that! Here is the similar looking brother

 

[Wrex]

And I just noticed your name..... Are you named after a certain krogan?

No, I live in Wrexham!