Pullet or cockerell?

[NorthGeogia]

I bought these straight run ISA Browns from TSC. They are a week old. I wonder if they are not first generation (and therefore not color sexlinked).
Compare the left chick's wing size against the wing size of the other 3 chicks. It's much shorter. Is he a cockerell and the others pullets?

 

[Ol Grey Mare]

Not seeing a photo, but ISA Brown is a proprietary name for Red Sex Link chicks - the whole point being that you can sex them at hatch based on color (females are red, males are white). You should have been able to see this difference in the birds while they were in the chick bin. As they mature, females will stay brown with some white and males feather out mostly white with patchy red on the wing-bows, etc. If they were being sold at TSC they would be first generation as they would have been sourced from the hatchery and you are not going to find hatcheries breeding second generation due to the management they have of their production stock.
Perhaps if/when the photo shows up we can help you sort out if maybe rather than a gender issue it is a case of the wrong breed being in the bin.

 

[BantamFan4Life]

Welcome to BYC! I'm glad you joined us!

 

[BantamLover21]

I'm glad you joined our "flock!"

A photo would help us identify your bird's gender.

 

[Wyandottes7]

Welcome to BYC.

I'm glad you joined our community!

A photo isn't appearing for me, either. If you can post one, I'll be happy to help determine gender.

 

[drumstick diva]

Sorry, I don't see a photo either but, Welcome to Backyard chickens.

 

[Michael OShay]

Welcome to BYC. Glad you decided to our flock. I hope you can get a photo posted. X2 on Ol Grey Mare. If your chicks are truly Isa Brown, whitish chicks = male, reddish chicks = female. Please feel free to ask any questions you may have. We are here to help in any way we can. Cheers.

 

[N F C]

Welcome to BYC!

 

[familyfarm1]

Hello

and Welcome to BYC!

So glad to have you join our community! Feel free to make yourself at home

 

[Kelsie2290]

Hello and Welcome To BYC! Sorry, don't see a picture yet.