This is my first post here. I bought three chicks from a local feed store about three weeks ago. I've been reading through a lot of the posts here, and I believe that one of my chicks, Robin, the silver laced wyandotte, is a rooster. She/he is growing more slowly than the other two chicks, Batman, a black australorp, and Alfred, an easter egger. I would appreciate some second opinions based on the photos below. I apologize for the poor photos. She is pretty quick and hard to photograph. Please let me know what you think. Thanks in advance for the feedback.