Please help Male or female?

[Irenelj78]

Thank all for your help! I attached four more pics of the tails. The first two pics are the smaller chick and the last two are for the bigger chick.

 

[Irenelj78]

Both of them are aggressive to the new chicks I hatched one month later....

 

[Fluffy Lambs]

Both of them are aggressive to the new chicks I hatched one month later....

Oh yes. Both cockerels.

 

[Irenelj78]

Oh yes. Both cockerels.

Is it because the tails are curly? Thanks

 

[Fluffy Lambs]

Is it because the tails are curly? Thanks

Well, they both look like cockerels and you said they had aggression. All my aggressive chicks have always been roos.