Five Week old chicks, one Delaware is a lot bigger, cockerel?

[SunriseChickers]

Edit: Resolved. Last page has rooster pics.

Hello! We got six chicks from Meyer hatchery in late May, and they were supposed to be pullets. They are now just under five weeks of age, and one of them, Kahlua, is quite a bit bigger. This chick also has a larger comb and is starting to get a bit of a voice already. Not to mention the different feather patterning. We didn't expect this, so we haven't kept an eye out for any dominant behavior, and at the moment I honestly can't tell if he/she is displaying any.
We don't intend to cull, but I do already have another rooster and now a total of eleven pullets(2yo roo is the only adult. He is currently with six 2.5mos). We will deal with problems as they come, if they come, and hope for the best.
So, is this big white one a cockerel? Almost certain it is.

 

[JedJackson]

Its comb is suspicious, but not enough for 100% certainty. I'd give it another couple of weeks and would watch the comb closely.

 

[SunriseChickers]

Wanted to post just one last time. Kahlua is now 5-6 months, and bigger than my 2yo roo. He has started crowing just within the last couple of weeks. Fortunately they still live and roost together peacefully. Anyhoos, he is quite gorgeous, and perfectly docile towards people, if not a little skittish.

 

[fluffycrow]

I'd say for now just watch it

 

[jpalmatier83]

Size of the bird has never been dispositive for me, but at six weeks that comb is pretty loud.

My vote is cockerel.

 

[SunriseChickers]

Probably our last little update, there's little doubt in my mind that this is a cockerel, but I still haven't heard any tiny crows. About 2.5-3mo. You can see the size difference both in the comb and the thick legs. My barred roo seems to possibly be getting a little hard on him occasionally, but they roost together fine.

Legs. Cockerel on the left, pullet on the right.

Pullet on the left, you can see how pale her comb still is compared to the other.

 

[Tookie]

Yes, does look like a boy.

 

[NatJ]

Probably our last little update, there's little doubt in my mind that this is a cockerel

Thanks for updating! I was reading along and guessing, and it's nice to know how it came out. (Although it is definitely disappointing that one of your "pullets" turned out to be male.)

 

[HorseGirlAbby]

I agree with the others, just keep a close eye on it and post an update in a couple weeks if you’re still not sure.

 

[Tookie]

Updates. The comb is getting redder, while the others are still pale. Still massive, feathering is getting suspicious, spur buds are just slightly bigger.
NOTE my camera doesn't pick up how red the comb is. It's a bit redder than it appears in the photos. Almost a pale pink lady apple red.

I say cockerel.