White Rock Genders?

[Tiller]

Any guesses as to genders?
The 5 in the second picture, and the hamburg are what have me curious along with sleepy head too. Trying to get these birds to hold still for pictures doesn't work well. I've had to sneak up on them after work when they are taking and afternoon nap.
Thanks,

 

[gamebirdsonly]

look like all roos not sure on the hamburg maybe a hen

 

[Tiller]

That's sort of the way I've been leaning too. Seems like white rocks can be a little difficult to tell sometimes though.