Boys???

[Scotchicks22]

Pretty sure out of our 10 chicks these are the boys but open to a more expert opinions!!!
they are all 6 weeks old, the first one is a welsummer, the next 2 are exchequer leghorns (although think the 3rd might have been a mislabelled egg as totally white) the and the 4th is a crested rock, that one we were less convinced but is definitely acting like a roo! Open to suggestions, having such fun raising them regardless and won't be making any 'rehoming' decisions in a rush! Thanks in advance

 

[fluffycrow]

All but the last one are for sure cockerels; the last one needs more time (leaning pullet). Update in 2 weeks

 

[The Moonshiner]

First 3 are cockerels.
I'm not convinced on the last one either.