What Breed and Gender are my TCS chicks?

[Nascardad]

My first time having chickens! Picked up at Tractor Supply the day before Easter. They had a sparse selection at the time. Picked 5 mixed red pullets(hopefully) and one barred rock.
Up first
http://imgur.com/JStmoZo

Same chick
http://imgur.com/J21F74V

The barred rock
http://imgur.com/tseZ12h

Thinking a rooster on this guy.
http://imgur.com/FbFy4hx

The rest look like this chick with some variation
http://imgur.com/cVH0bFW

The whole flock
http://imgur.com/apKu2ps
I can take individual pics if needed.

Thank you everyone!

 

[Mountain Peeps]

Right now they all look like girls. I'm not the best chicken breed expert but the little black ones might be barred rocks.

 

[BantamLover21]

The red/white birds are Red Sex-Link pullets. Its too young to tell gender with the Barred Rock, though it isn't looking like an obvious rooster yet.