Do pink combs always mean roos?

[naturemom]

I started out with 7 chicks and have given away 3 that I was sure were boys, but now I'm worried that the rest might also be. I keep reading that hens' combs don't redden until they are ready to lay eggs, and the combs on 3 of my 4 are already pink at 5 weeks. Does that mean boys for sure, or can hens have pink combs this young?
I can't really compare them to each other, because they are all different breeds.

 

[speckledhen]

Pullets get pink combs, too, but usually yellowy-pink, not really red. They do get them before they lay, trust me. At least most breeds do weeks before they lay, but they do turn redder at that point.

 

[thechickenwhisperer]

Hi, takes several weeks til they redden up. The ones I had and thought were roos actually turned out to be girls with pinker combs.