Roo or hen?

[NancyDz]

I have two chicks that are 4.5 weeks old. One is a SLW , the other a Sicilian Buttercup.
I am beginning to think the SLW is going to be a roo. Can you tell at this age?
Here's a couple pics, sorry my camera battery died so this is the only two I have for now:

 

[gritsar]

I'm betting the SLW is a cockerel.

 

[pkeeler]

I would think the wyandotte is a roo. But wyandottes can be tough. The other doesn't have a comb or wattles to speak of, but the hackle feathers look male.

 

[NancyDz]

That would be just my luck.. two ROOS!

I mainly wanted the buttercup but had to get two so they'd have company... looks like I'm rehoming one for sure and maybe two!

 

[azelgin]

I think your SLW is a roo. Their combs are sometimes hard to tell, but, with those waddles at 3 1/2 week I'd say it's pretty certain. I don't know about your other one. No experience there.

 

[ArizonaDesertChicks]

I'd say the SLW is a roo because of the wattles and color of the comb. I'm not familiar with the other breed, but I don't think chicks can get pointed hackle feathers this early.