Here are my guesses on the genders of my chicks

[skeeter9]

All of the 4 week olds were hatched by me, the last 2 were hatched at the local high school as part of a Vet Science project. We are not sure on breeds, but I think it's pretty obvious that the white one is a pullet and the barred is a cockerel.

4 week old Cuckoo Marans - Cockerel

4 week old Cuckoo Marans - Cockerel on left, Pullet in the middle

4 week old Black Orp - Pullet? - very small comb, no red or pink at all

4 week old Black Orp - another Pullet?

4 week old Cuckoo Marans - Pullets

7 week old. Possibly Leghorn? Pullet?

7 week old. Possibly Barred Rock. Cockerel!!

Anyone have any other ideas?

 

[DoctorGoose]

Your guesses are the same as mine!

 

[ole-crone]

Before I started looking at combs and waddles I watched the tails. Now I watch both. Since I couldn't see the tails in all of your pics I'm not sure - one that you think is a pullet, looks more like a roo to me - the tail is fluffy and rounded rather than coming to a distinct point.