I was given these two a couple months ago and was told they were Sumatra pullets. The blue one isn’t aggressive but scares very easy. The black one is bossy and is intimidating to the rest of the flock. I currently have these two with my laying hen and my main rooster (the other two in the 2nd photo). So far no issues but I don’t want to wait until I have problems. So, roosters? Based on the tail feathers I’d think so, but again no crowing. I’m not experienced with this breed so any tips are appreciated