Barred Rock Cross - Cockerel or Pullet?

[GRman]

How old is the bird in pic 3?

All the pictured birds are 14 weeks.

I haven't heard any of them attempt to crow yet from this hatch but I've also got another 5 not pictured that are 10 weeks and I heard one of them attempt a crow this morning.

I just assumed the one from pic 3 was a cockerel based on size of comb but could it be a cross that just develops the comb quicker?

 

[Painted Calls]

All the pictured birds are 14 weeks.

I haven't heard any of them attempt to crow yet from this hatch but I've also got another 5 not pictured that are 10 weeks and I heard one of them attempt a crow this morning.

I just assumed the one from pic 3 was a cockerel based on size of comb but could it be a cross that just develops the comb quicker?

Pretty sure you're right. He just seems to be developing a bit slower.