I have a problem that 2 of my hens look identical. I'm sure that i am not the only one with this problem as solid colour breeds much have this a lot? I have studied these hens and looked for little differences but can't find any. Beaks feathers feet toe nails eyes all the same, combs might be slightly different but can't tell unless i catch each one. How do you tell them apart without the use of bands on the legs?