Is this roo behavior please help

[DolceVita]

These guys are 2 weeks old but recently the buff Orpington is showing signs of aggression. See video. They are all Orpingtons. Is this roo behavior?? Some one please help...

 

[Doc7]

Not roo behavior, all chicks

 

[Doc7]

https://www.backyardchickens.com/threads/my-5-week-old-chicks-keep-fighting.1384547/

 

[Mamatomany123]

Some chicks are just bullies. Chicks of both genders chest bump. I wouldnt say cockerel based on that behavior but I would watch because that seems like a bit of comb for a 2 week old chick.

 

[DolceVita]

Also he or she stands quite tall! I’m asking this because the breeder said that I could exchange those 2 for calmer Orpingtons. What do y’all think? At the time of exchange they will be 3 weeks