She is definitely 100% a hen she is one of the two leghorns I have had for over a year for a long time we only had the two and they were both laying so she is definitely a girl. We brought home 4 new hens a month ago and the leghorns (including the one pictured above) immediately dominated everybody else and the rooster has been here two weeks and I've never seen him be aggressive I'm a chicken watcher I love watching their behaviors and how they interact with eachother the only " fighting" I've seen are my leg horns pecking the other hens to chase them off of a good plot of scratch or things like that just typical pecking order crap as far as I can tell.