The cockerel is a little gentleman with the hens, not at all aggressive as many young roosters can be. This collection is "the darkest of the dark" -- including true "chocolate" eggs and deep, reddish-brown eggs. If you are an admirer of blue genetics, Blue Birchens--along with the Blue Copper Marans--are a must. We do select for the darkest eggs with the Whites, but egg color with this variety is not as dark as with Black Coppers and is a work in progress. Females will have a smaller, darker spot on their heads, and will have darker legs. The beautiful Black Copper Marans are calm, quiet and gentle. My light is somewhat shaded at the coop though. The coloring on the eggs is so thick that if you catch it while the egg is still wet, you can wipe off some of the brown with a clean cloth! These eggs will sell out fast!The Marans breed was developed originally developed in France in the mid 1800's in the town for which it bears its name, Marans.