Thinking many Roos, but only 1 Crows.

[Blueicebird]

I think I have 5 Roos outta my 7 Straight run, but only 1 (That I know is a Roo 100%) is crowing, known as "Puck". Non-other of the "boys" have vocalized yet. I do believe they are roos because they have the longer tail feathers like Puck and nice red waddles and combs. Do they not crow because Puck does? or are they just slow learners?

 

[emys]

Puck is dominant, and if they crow they are challenging him, so they aren't crowing. (at least not yet.)