Faverolles should be kept separate from most other breeds. They are too docile to mix well with more feisty birds, they are quieter in both temperament and vocalization, the roos are no wheres near as loud as other breeds, and the girls are super mellow... and even in an all Fav flock you need to keep an eye on them so the roos don't over breed favorite hens. I will not knowingly sell ANY of my birds to people that want to keep them with other breeds that are likely to bully them; this means no Rocks, no New Hampshires, no Araucanas, and no barnyard mixes. I also call to follow up on how the birds do in their new homes to make sure they are not being picked on. I ordered 50 pullets from MPC, got 53, and they were all strong and super healthy except for 1 weak chick which I culled, I also culled 15 for bad toes, and another 8 were culled for poor beards, and another 3 were culled for smutty beards. This left a total of 26 which I reduced to 10 by 12 weeks of age. The best 3 were selected from these which I then used for 1 generation, then back crossed all the females produced to the Boulanger strain. No males were retained until 2 generations later. I did not observe any weakness in the chicks other then the 1 chick I culled the day I got them, and she may have just gotten squished or something during shipping. Favs are not any weaker then other breeds, but they are more passive... it is like the difference between putting a Pug dog with a bunch of Jack Russel terriers, you are comparing apples and oranges and the more active breed will seem "healthier" but it is a difference of personality and breed, not health.