16 week old growers

[MysteryChicken]

Hi

Would like your opinions which ones are cockerels and which are pullets. I have a good idea for most of them (because I've heard them crowing and it's mostly obvious at this stage) but since I'm still learning I'd like to confirm with those with more experience. I can take better photos if needed.

Thanks

These are all cockerels.

 

[MysteryChicken]

Pullets.