Backyard mixes sexing help

[MAPhillips]

I have 2 barnyard mixes that I would love help guessing the sex. They are both 3 months old this weekend.

BYM is on the right next to my Brahma pullet (pretty sure it's a pullet). It is about 2 weeks younger than the Brahma. Best picture I have for the moment.

This BYM is super agile and quite flighty even though all the others are pretty tame. It has a really long tail. Never seen a chicken built like this but I am not that experienced. Any idea of sex on these 2? Any way to guess what breeds they may have in them? I was thinking the black one looked like the Austrolorp but the little brown and gray chickie has me stumped. First time posting. Thanks for any help!

 

[Pretty Birds]

They all appear to be pullets.

 

[pozees2]

Both look female to me as well, the second one must have some sort of game breed contributing to that build. I've never had them but had a friend in town who had a couple, and she adored them, said they were the best broodies she'd ever had.