Replace roo with a hen?

[Moose The Ameraucana]

If I get a roo and take it back (the grange said I an do that) and get a new pullet & introduce it to my 2 other pullets (because I cant just have 2 chickens) what will happen? will they get along or fight?

 

[dianaross77]

That depends on the age/size difference and their personalities.