I have 5 Golden laced polish chickens and can not tell if they are roosters or hens. All of their crests look the same. They are around 3 months old. I have noticed 2 of the birds have very rounded tail feathers and the others tail feathers are sharp and pointed looking. Could the rounded ones be hens? Oddly the ones with the rounded tail feathers are the biggest ones of The chickens so initially I thought rooster because of their size? Any tips would be helpful! Thank you! None of them have waddles or combs