Hen or Roo?

[chicksak]

Hi everyone,
We have 4 3 month old Buff's that we are hoping are all girls, however I am beginning to wonder if 1 is not a roo. Can anyone shed any light?

I am trying to post pictures, but there is no picture icons to do so. All my pictures are on my profile. In the meantime I will continue to try and get them on this thread.
Thanks
Christina

 

[chicksak]

http://cdn.backyardchickens.com/b/b4/900x900px-LL-b4076296_image.jpeg

If this works, here is the picture.

 

[annanimal]

https://www.backyardchickens.com/forums/threads/add/forumId/15
Hope it helps!