we just got her to days ago, we thought she might be a barred rock,but her combs to big. And her feathers are brown. She also lays big brown eggs. And just started laying.
I see that you have already started a thread here on New Member Introductions. The best place to have started this thread would be the gender / breed forum - https://www.backyardchickens.com/f/15/what-breed-or-gender-is-this. It's no big deal, but posting on the most appropriate forum gives you the best chance of feedback. In this case, D/Diva has considerable experience in this field, so I'd go with her opinion.