what are my chicks, pullets or roos!!!

[pigeonE15]

well ive had these chicks for 2 months already, and i wanted to know wich ones are pullets and wich ones are roosters!!! plz help all the black ones are barred rock and the other orange-red are island reds-mixed with i dont know. they are going to be in order###1#2
#3#4
#5#6

 

[Habibs Hens]

1 pullet
2 and 3 undecided but Rooish

4 5 6 Roos