that kind you, definitely given me some things to think about. Our BCM, turned out to be a rooster. As of right now, he's safe.Some breeds do seem to get along better than others. I've been reading the Bielefelder thread and those big dual purpose birds seem to have a good disposition. The Bielies are just a bit too heavy and big to keep in my tiny backyard. Some owners swear their Brahmas are gentle giants but again not for my tiny backyard. My reason to have chickens is to have pets first, eggs second. I cycled through 14 chickens in 5 years to get down to the gentle 4 hens I have now. The jittery jumpy nature of EEs or Amers never seems to go away -- they are ever-watchful and overly-cautious -- they do get tamer around humans but sudden movements or sounds will still upset them. Being skittish is just their nature. I discovered when I had the heavier dual purpose or assertive layer breeds my Amer would not come up for treats with the group. After I re-homed the assertive heavier breeds into a friend's laying flock, my Amer started to approach for treats with the other gentle chickens. Even gentle breeds have to establish pecking order for smooth flock politics but in my case when the bigger heavier breeds matured by 2 or 3 yrs old their temptation was to harshly bully the smaller breeds -- I didn't want 7-lb chickens bullying smaller gentler 2-lb or 4-lb birds so I eventually had to re-home all the production and dual-purpose breeds. I don't mind the smaller or medium eggs in order to have a peaceful backyard. Before we re-homed the bigger breeds our Blue Wheaten Amer would never come this close at treats time! Here she is hearing her name to get her treat. The birds know to wait til they hear their name to reach for their treat. (it takes time & patience). This Buff Leghorn turned out overly aggressive toward our Silkies and Ameraucana chasing and pulling out crests and beards so she was re-homed at one-year-old. This White Leghorn was a gentle flock leader for 3 years but then she turned too assertive toward her flockmates. I choose to re-home aggressive birds before any injuries happen. My yard isn't big enough to divide big birds from my smaller gentler breeds. This Cuckoo Marans was my only experience with Marans. My friend had several Cuckoos and BCMs and we re-homed all of them -- big bullies and a bit more stand-offish compared to other large breeds. These are good hens to keep in heavier breed flocks but not with bantams IMO. This is what the 7-lb Cuckoo Marans did to our 2.5-lb Silkie on the roost at night before we realized she was NOT moulting - poor thing! I was new at backyard chickens 5 yrs ago and this incident made me aware of watching out for injurious bullies.