Pretty sure this is a Salmon Faverolle roo...

[keesmom]

I always say combs dont matter too much.

At 5 months old the comb should be bigger and he should be crowing. The OP's bird's coloring is all wrong for a cockerel. Here is an example of a male. Notice the black chest, mahogany back, light hackles. The white wing triangle will come later.

3 month old male

 

[BantamFan4Life]

Cockerel

 

[Chicken Tamer]

At 5 months old the comb should be bigger and he should be crowing. The OP's bird's coloring is all wrong for a cockerel. Here is an example of a male. Notice the black chest, mahogany back, light hackles. The white wing triangle will come later.

3 month old male

I'm just saying, other parts are easier to tell. Like, I had a hen who had a giant comb, and everyone mistook her for a rooster.

 

[howfunkyisurchicken]

Ok, when I posted I thought 100% that this bird was a cockerel, I didn't see that it had been hatched in Sept (that's what I get for skimming)!!!! I don't know what it is. I Googled hatchery quality Salmon Favorelles and alot of pullets popped up looking like the bird in question. So, I'm going to gracefully bow out of this one. But I will check back for updates bc I'm very curious to see what it ends up being!
Nikki

 

[RhodeRunner]

I agree, it looks like a pullet.

 

[sevenbabychicks]

Yours looks like a pullet I remembered from a different thread. Personally, I think she looks kinda cool

https://www.backyardchickens.com/t/705967/salmon-faverolle-boy-or-girl