The only thing I'm seeing is that there's one in there that looks like it could be a SLW, judging by the markings on its face. I'm seeing it (or a few like it) in the 1st, 2nd and 4th pictures. In the 4th picture, it looks like its comb is really growing a lot - is it single-combed? If its comb is as big as it looks to me, I'd bet it's a male.
The barred rock in the 2nd picture seems to have a fairly large white head spot, which makes me think male. How dark is the black wash down the front of its legs? Darker legs usually mean female with BR's. I can't tell by looking at its feathers in that pic.
I'm also seeing EE's, brown leghorns, and buff orps? Is that right? On those, I'm not seeing anything that screams male.