My Columbian Rock hens are my sweethearts! They all putter around the yard with me--- they squat when we reach for them, and most of them are happy to be held. All around friendly and happy go lucky hens.
The CR rooster is a protective, loud beast. He is good with me and the family, but he doesn't take to strangers around his girls. He also is my predator master. He will make a very specific warning call if there are any ravens/crows/dogs/eagles/predators in the area and all the girls immediately run for cover. It has helped with us free ranging the flock, and we haven't had any losses yet! (5 months) We also have a Red Rock rooster who is about as useless as a non laying, anti social hen-- but he's pretty. They both serve their purposes well but the ladies take to the CR much more readily and kind of follow him around like their white night.
Lots of eggs!!!! My 8 CR hens were the first to start laying of our 24 girls. They are also the most consistent and it seems like I'm getting more than an egg a day from a couple of them but that could be just crazy talk! We have 24 girls and not all are laying yet, and can't quite sort out who/what/when/where
All in all, these are my favourite of the breeds we have had so far. They are beautiful, sweet, and productive!