I worry about her, the duck, but I think she thinks she is a chicken. We started with two but one was attacked and lost. They were brooded with the chickens and imprinted on them, so everyone just happily flocks together. I am thinking I may try to get more ducklings next year, see what happens.
Yes I am happy with my mixed flock, I started with just the BRs had a dog attack and the owner kindly gave me two EE in return for the lost birds. Then I added the others. I enjoy the BR personality, they make great foragers. The large assortment of meat birds are a new experiment. Before I just had a few CX.
And yes I think the EE make great watch birds, they are as good as the Rooster was.
I happen to really like the outgoing curiosity of Dominiques from which BRs were bred -- except BRs were crossed with Malay and Indian Game to make them heavier/meatier -- so it's not surprising the BRs have congeniality in common with Doms. So sorry about the dog attack. That sucks! I almost lost my first flock to stray mutts that broke into the yard through an old gate but good neighbors chased them off before they got to our birds.