Welcome to BYC Glad you joined us over here! Here are some threads that may interest and help you:
https://www.backyardchickens.com/t/463817/easter-egger-sexing-tips-and-tricks-pictures-included/0_30
https://www.backyardchickens.com/t/361185/easter-egger-club/0_30
Enjoy the site!