Do both genders chest bump/spar?

[kaylee gee]

My 7 RIR chicks are about 3-4 weeks old (I think) and they are a very lively bunch! They run at each other, stand up very tall, get chest-to-chest and stare for a second then back off again. They fly around the pen they are in too.

What I want to know is, do only cockerels spar like that? Or do pullets too? There is one chick i am almost positive is a roo (he is bigger than the rest, has darker coloring on his head/neck, and just seems all-around masculine. What about the others? Do I have a pen full of roos??

[EDIT]
Thanks for the answers y'all! I am going to put up a pic of each of their heads so y'all can see the combs. Can you tell this young by looking at their combs what their gender is?? Also, do the feathers over their ears show you anything? I notice they are either light or dark red. The lighting is not very good, as i had to hold them up to a window curtain to get my camera to focus on them and not the background, and i didnt want to use the flash on their little eyes.

Chick 1


Chick 2


Chick 3


Chick 4 (You can see why i think this one is a roo!)


Chick 5


Chick 6


Chick 7

 

[ramirezframing]

both genders do this all though live, just when older most the time (but not always) its the males

 

[PrairieChickens]

Oh, no... little girls will do it too! I have some really great photos and video of all of my young, gangly chicks challenging each other, and only two of them were boys. One little chick challenged a full grown hen when she was just a peep! The look on the hen's face was priceless as this little chipmunk-striped chick ran up to her, chest-bumped her (best a tiny chick can on a grown hen), then did the dance trying to intimidate her. Big Red just walked away like "Yeah, ok... I'll leave you to that."

 

[Crafty-Duck]

Oh ya! girls do it too!!! When I first got chickens it worried me a little that I may have roosters

 

[kaylee gee]

Oh, no... little girls will do it too! I have some really great photos and video of all of my young, gangly chicks challenging each other, and only two of them were boys. One little chick challenged a full grown hen when she was just a peep! The look on the hen's face was priceless as this little chipmunk-striped chick ran up to her, chest-bumped her (best a tiny chick can on a grown hen), then did the dance trying to intimidate her. Big Red just walked away like "Yeah, ok... I'll leave you to that."

lol that is so funny! i can imagine these doing that to my hens! haha!

 

[jbarrett]

4,5,7 have a larger comb than all the others but im newer so I believe 4 is a rooster for sure!

 

[kaylee gee]

4,5,7 have a larger comb than all the others but im newer so I believe 4 is a rooster for sure!

Yes those are the ones i think may be roos too, but 4 for sure!

 

[hdowden]

4 and 7 look like they will be cockerels. 5 maybe

 

[kaylee gee]

4 and 7 look like they will be cockerels. 5 maybe

okay! i think so too, so hopefully we will only have to rehome/eat 2 roos lol
we are getting 5 more chicks tomorrow or so, that were hatched in the same batch as these guys, so ill add their pics once i have them.

 

[PrairieChickens]

It's not real obvious from the photo what's going on, but that's little fluffy Chipmunk trying to challenge Big Red.