Help with sexing of these mixed breeds.

[Chickenmanjim7]

I incubated my first batch of eggs recently. They are now about 4 weeks old and I have pretty much gotten the sex of all but two of them. ( some of them have started crowing it's hilarious.) Anyway, Looking for help with these two. I know its not 100% especially since they are mixed but educated guesses are appreciated!

 

[Pyxis]

They're too young to be decisive, but no signs of them being cockerels yet.

 

[drumstick diva]

agree