Gender of my 4.5 week old chicks?

[Hannahdoesntexist]

So my babies are just about 4.5 weeks old and almost fully feathered and I was wondering what gender they are. Any ideas would be very helpful to this first time chick raiser! If it's too early I will repost in a week or two but wanted to see if any signs yet
The pictures are in order with Kiki then Clank(despite me being able to tell them apart I managed to label the images wrong), Mixy and lastly Pip. Kiki has always been that bit smaller than the rest and Pip has always looked a little different. I was told they were isa browns but honestly I am not sure if they are first or second generation so I am not 100% sure even with them all being brown if their sex link is actually there. So I wanted to check here since you guys are all much more knowledgeable on this than me. Thanks in advance!

 

[LadiesAndJane]

Look like all girls. Last one has a bigger comb, but is not red, so likely pullet as well. First generation ISA browns sex link should all be female. You are right in stating that the trait goes out the window in subsequent generations.

 

[LadiesAndJane]

If you got the chicks from a hatchery, they should be first generation.

 

[InterestingChickens]

At the moment they look like they're all pullets. It's still a bit young to tell, so in a few weeks give us a update. But as @jmns said, if any combs turn red in the next couple weeks, they are most likely cockerels.

 

[Hannahdoesntexist]

They were from a farmer who was breeding a few other breeds locally. I'm almost certain that their red breed was Rhode island red though because as chicks and even as they have gotten older they looked so similar to them even down to the wings. So I guess we will see if they still have that sex link in a few weeks

 

[TheOddOneOut]

They were from a farmer who was breeding a few other breeds locally. I'm almost certain that their red breed was Rhode island red though because as chicks and even as they have gotten older they looked so similar to them even down to the wings. So I guess we will see if they still have that sex link in a few weeks

I think they are ISA Browns.
All girls.