I've attached a pic of two of my 8 Brown Leghorn chicks. It's my first hatch with this breed but there are definite differences. Four chicks look like the top one which I assume is a cockerel and four are like the bottom chick, which I think are pullets. I'm not an expert so I might be wrong of course! Is it safe at 5 weeks to cull the roosters based on what I'm seeing now or wait a few weeks? Is it likely any of my suspect pullets with their smaller combs and lighter breast and neck feathers will turn out to be boys?