We have 4 white Leghorn hens, but was told could be a rooster in the mix. I have this comparison picture of the top one might be a rooster, but the only signs are the comb and waddles. No curved tail feathers, or crowing.
The bottom picture is what my other 3 hens all look like. View attachment 1288304
Oh ok. Then they are both pullets. The top one is nearer to the point of laying if she hasn't started already. That's whey her comb is larger and redder.
Need pictures of the actual birds in question. At 6 months old, males would be VERY obvious. They'd have very large red combs, long sickle feathers in the tail, and long saddle feathers.